Eu [Gr. well, orig. neut. of good; prob. connected with Skr. su, from the same root as E. is; or with Skr. vasu good, prob. fr. the same root as E. was.] A prefix used frequently in composition, signifying well, good, advantageous; — the opposite of dys-.

Eucairite
Eu•cai´rite, n. [Gr. seasonable, opportune; well, good + season.] (Min.) A metallic mineral, a selenide of copper and silver; — so called by Berzelius on account of its being found soon after the discovery of the metal selenium.

Eucalyn
Eu´ca•lyn (u"ka•lin), n. (Chem.) An unfermentable sugar, obtained as an uncrystallizable sirup by the decomposition of melitose; also obtained from a Tasmanian eucalyptus, — whence its name.

Eucalyptol
Eu•ca•lyp•tol, n. [ Eucalyptus + L. oleum oil.] (Chem.) A volatile, terpenelike oil extracted from the eucalyptus, and consisting largely of cymene.

Eucalyptus
Eu•ca•lyp´tus, n. [NL., from GR. well, good + covered. The buds of Eucalyptus have a hemispherical or conical covering, which falls off at anthesis.] (Bot.) A myrtaceous genus of trees, mostly Australian. Many of them grow to an immense height, one or two species exceeding the height even of the California Sequoia. They have rigid, entire leaves with one edge turned toward the zenith. Most of them secrete resinous gums, whence they called gum trees, and their timber is of great value. Eucalyptus Globulus is the blue gum; E. gigantea, the stringy bark: E. amygdalina, the peppermint tree. E. Gunnii, the Tasmanian cider tree, yields a refreshing drink from wounds made in the bark in the spring. Other species yield oils, tars, acids, dyes and tans. It is said that miasmatic valleys in Algeria and Portugal, and a part of the unhealthy Roman Campagna, have been made more salubrious by planting groves of these trees.

Eucharis
Eu´cha•ris, n. [NL., fr. L. eucharis agreeable, Gr. e’y•charis See Eucharist.] (Bot.) A genus of South American amaryllidaceous plants with large and beautiful white blossoms.

Eucharist
Eu´cha•rist, n. [L. eucharistia, Gr. e’ycharisti•a, lit., a giving of thanks; e’y^ + cha•ris favor, grace, thanks; akin to chai•rein to rejoice, and prob. to yearn: cf. F. eucharistie.]
1. The act of giving thanks; thanksgiving. [Obs.]
"Led through the vale of tears to the region of eucharist and hallelujahs." South.
2. (Eccl.) The sacrament of the Lord’s Supper; the solemn act of ceremony of commemorating the death of Christ, in the use of bread and wine, as the appointed emblems; the communion. — See Sacrament. { Eu•cha•ris´tic, Eu•cha•ris´tic•al } a. [Cf. F. eucharistie.]
1. Giving thanks; expressing thankfulness; rejoicing. [Obs.]
"The eucharistical part of our daily devotions." Ray.
2. Pertaining to the Lord’s Supper. "The eucharistic sacrament." Sir. G. C. Lewis.

Euchite
Eu´chite, n. [From Gr. to pray.] One who resolves religion into prayer. [Obs.] Gauden.

Euchloric
Eu•chlo´ric, a. [Gr. e’y•chlwro•s fresh and green; e’y^ well + chlwro•s pale green.] (Chem.) Relating to, or consisting of, euchlorine; as euchloric gas. Davy.

Euchlorine
Eu•chlo´rine, n. [Cf. F. euchlorine. See Euchloric.] (Chem.) A yellow or greenish yellow gas first prepared by Davy, evolved from potassium chlorate and hydrochloric acid. It is supposed to consist of chlorine tetroxide with some free chlorine. { Eu•cho•lo´gi•on, Eu•chol´o•gy } n. [NL. euchologion, Gr. prayer book; prayer, vow (fr. to pray) + to say, speak.] (Eccl.) A formulary of prayers; the book of offices in the Greek Church, containing the liturgy, sacraments, and forms of prayers.

Euchologue
Eu´cho•logue, n. [F. euchologe.] Euchology. [R.]

Euchre
Eu´chre, n. [Perh. from F. ecarte.] A game at cards, that may be played by two, three, or four persons, the highest card (except when an extra card called the Joker is used) being the knave of the same suit as the trump, and called right bower, the lowest card used being the seven, or frequently, in two-handed euchre, the nine spot. See Bower.

Euchre
Eu´chre, v. t.
1. To defeat, in a game of euchre, the side that named the trump.
2. To defeat or foil thoroughly in any scheme. [Slang.]

Euchroic
Eu•chro´ic, a. [Gr. well- colored; well + color.] (Chem.) Having a fine color. Euchroic acid (Chem.), an organic, imide acid, obtained as a colorless crystalline substance, C₁₂H₄N₂O₈ by heating an ammonium salt of mellitic acid. By reduction it is changed to a dark blue substance ( euchrone), — hence its name.

Euchroite
Eu´chro•ite, n. [See Euchroic.] (Min.) A mineral occurring in transparent emerald green crystals. It is hydrous arseniate of copper.

Euchrone
Eu´chrone n. (Chem.) A substance obtained from euchroic acid. See Eychroic.

Euchymy
Eu´chy•my, n. [Gr. well + juice liquid. See Chyme.] (Med.) A good state of the blood and other fluids of the body.

Euclase
Eu´clase n. [Gr. well, easily + to break. Cf. F. euclase, G. euklas. See named from its brittleness.] (Min.) A brittle gem occurring in light green, transparent crystals, affording a brilliant clinodiagonal cleavage. It is a silicate of alumina and glucina.

Euclid
Eu´clid, n. A Greek geometer of the 3d century b. c.; also his treatise on geometry, and hence, the principles of geometry, in general.

Euclidian
Eu•clid´i•an, n. Related to Euclid, or to the geometry of Euclid. Euclidian space (Geom.), the kind of space to which the axioms and definitions of Euclid, relative to straight lines and parallel lines, apply; — called also flat space, and homaloidal space.

Eucopepoda
Eu•co•pep´o•da, n. pl. [NL. See Eu- and Copepoda.] (Zoöl.) A group which includes the typical copepods and the lerneans.

Eucrasy
Eu´cra•sy [Gr. ;, well-tempered; e’y^ well + to mix, temper: cf. F. eucrasie.] (Med.) Such a due mixture of qualities in bodies as constitutes health or soundness. Quincy.

Euctical
Euc´tic•al [Gr., fr. to pray, wish.] Expecting a wish; supplicatory. [R.]
"Sacrifices … distinguished into expiatory, euctical, and eucharistical." Bp. Law. { Eu•de´mon, Eu•dae´mon }, n. [Gr. e’y^ well, good + one’s demon.] A good angel. Southey. { Eu•de•mon´ics, Eu•dae•mon´ics }, n. [Gr. conducive to happiness. See Eudemonism.] That part of moral philosophy which treats of happiness; the science of happiness; — contrasted with aretaics. J. Grote. { Eu•de´mon•ism, Eu•dae´mon•ism }, n. [Gr. a thinking happy, fr, blessed with a good genius, happy; e’y^ well, good + one’s demon of genius. See Demon.] That system of ethics which defines and enforces moral obligation by its relation to happiness or personal well-being. { Eu•de´mon•ist, Eu•dae´mon•ist }, n. One who believes in eudemonism.
"I am too much of a eudaemonist; I hanker too much after a state of happiness both for myself and others." De Quincey. { Eu•de•mon•is´tic, Eu•dae•mon•is´tic }, a. Of or pertaining to eudemonism. { Eu•de•mon•is´tic•al, Eu•dae•mon•is´tic•al }, a. Eudemonistic.

Eudialyte
Eu•di´a•lyte, n. [Gr. e’y^ well, easily + to dissolve. So called because easily dissolvable in acids.] (Min.) A mineral of a brownish red color and vitreous luster, consisting chiefly of the silicates of iron, zirconia, and lime.

Eudiometer
Eu•di•om´e•ter, n. [Gr. fair, clear weather, fr. fine, clear ( said of the air or weather) + -meter: cf. F. ediomètre.] (Chem.) An instrument for the volumetric measurement of gases; — so named because frequently used to determine the purity of the air. It usually consists of a finely graduated and calibrated glass tube, open at one end, the bottom; and having near the top a pair of platinum wires fused in, to allow the passage of an electric spark, as the process involves the explosion and combustion of one of the ingredients to be determined. The operation is conducted in a trough of mercury, or sometimes over water. Cf. Burette. Ure’s eudiometer has the tube bent in the form of the letter. U. { Eu•di•o•met´ric, Eu•di•o•met´ric•al } a. Of or pertaining to a eudiometer; as eudiometrical experiments or results.

Eudiometry
Eu•di•om´e•try, n. [Cf. F. eudiometrie.] (Chem.) The art or process of determining the constituents of a gaseous mixture by means of the eudiometer, or for ascertaining the purity of the air or the amount of oxygen in it.

Eudipleura
Eu•di•pleu´ra, n. pl. [NL., fr. Gr. e’y^ well + double + rib,, pl.,side.] (Biol.) The fundamental forms of organic life, that are composed of two equal and symmetrical halves. Syd. Soc. Lex.

Eudoxian
Eu•dox´i•an, n. (Eccl. Hist.) A follower of Eudoxius, patriarch of Antioch and Constantinople in the 4th century, and a celebrated defender of the doctrines of Arius.

Euganoidei
Eu•ga•noi´de•i, n. pl. [NL., fr. Gr. e’y^ well + NL. ganoidei. See Ganoid.] (Zoöl) A group which includes the bony ganoids, as the gar pikes.

Euge
Eu´ge, n. [L., well done! bravo! Gr. .] Applause. [Obs.] Hammond.

Eugenesis
Eu•gen´e•sis, n. [Pref. eu- + genesis.] (Biol.) The quality or condition of having strong reproductive powers; generation with full fertility between different species or races, specif. between hybrids of the first generation. { Eur•af´ric, Eur•af´ri•can }, a. [ Europe + Afric, African.]
1. (Geog.) Of, pertaining to, or designating, the continents of Europe and Africa combined.
2. (Zoögeography) Pert. to or designating a region including most of Europe and northern Africa south to the Sahara.
3. Of European and African descent.

Eugenia
Eu•ge´ni•a (u•je"ni•a), n. [NL. Named in honor of Prince Eugene of Savoy.] (Bot.) A genus of myrtaceous plants, mostly of tropical countries, and including several aromatic trees and shrubs, among which are the trees which produce allspice and cloves of commerce.

Eugenic
Eu•gen´ic (u•jen"ik), a. [See Eugenia.] (Chem.) Pertaining to, or derived from, cloves; as eugenic acid.

Eugenic
Eu•gen´ic (u•jen"ik), a. [Gr. e’ygenh•s.] Well-born; of high birth. Atlantic Monthly.

Eugenics
Eu•gen´ics, n. The science of improving stock, whether human or animal. F. Galton.

Eugenin
Eu´ge•nin, n. (Chem.) A colorless, crystalline substance extracted from oil of cloves; — called also clove camphor.

Eugenol
Eu´ge•nol, n. [ Eugenia + -ol.] (Chem.) A colorless, aromatic, liquid hydrocarbon, C₁₀H₁₂O₂ resembling the phenols, and hence also called eugenic acid. It is found in the oils of pimento and cloves.

Eugeny
Eu´ge•ny [Gr., fr. e’ygenh•s well born; e’y^ well + race.] Nobleness of birth. [Obs.] { Eu•get´ic, Eu•ge•tin´ic } a. (Chem) Pertaining to, or derived from, eugenol; as eugetic acid.

Eugh, n. [See Yew.] The yew. [Obs.] Dryden. { Eu•gu´bi•an, Eu´gu•bine } a. Of or pertaining to the ancient town of Eugubium (now Gubbio); as the Eugubine tablets, or tables, or inscriptions.

Euharmonic
Eu•har•mon´ic, a. [Pref. -eu + harmonic.] (Mus.) Producing mathematically perfect harmony or concord; sweetly or perfectly harmonious.

Euhemerism
Eu•hem´er•ism n. [L. Euhemerus, Gr. a philosopher, about 300 .] The theory, held by Euhemerus, that the gods of mythology were but deified mortals, and their deeds only the amplification in imagination of human acts.

Euhemerist
Eu•hem´er•ist, n. One who advocates euhemerism.

Euhemeristic
Eu•hem•er•is´tic, a. Of or pertaining to euhemerism.

Euhemerize
Eu•hem´er•ize v. t. To interpret (mythology) on the theory of euhemerism.

Euisopoda
Eu•i•sop´o•da pl. [NL. See Eu- and Isopoda.] (Zoöl.) A group which includes the typical Isopoda.

Eulachon
Eu´la•chon, n. [Native Indian name.] (Zoöl.) The candlefish. [Written also oulachan, oolacan, and ulikon.] See Candlefish.

Eulerian
Eu•le´ri•an a. Pertaining to Euler, a German mathematician of the 18th century. Eulerian integrals, certain definite integrals whose properties were first investigated by Euler. { Eu•log´ic, Eu•log´ic•al } a. [See Eulogy.] Bestowing praise of eulogy; commendatory; eulogistic. [R.] — Eu•log´ic•al•ly, adv. [R.]

Eulogist
Eu´lo•gist n. One who eulogizes or praises; panegyrist; encomiast. Buckle. { Eu•lo•gis´tic, Eu•lo•gis´tic•al } a. Of or pertaining to eulogy; characterized by eulogy; bestowing praise; panegyrical; commendatory; laudatory; as eulogistic speech or discourse. — Eu´lo•gis´tic•al•ly, adv.

Eulogium
Eu•lo´gi•um n. ; pl. Eulogiums (#). [LL., fr. Gr. eulogy.] A formal eulogy. Smollett.

Eulogize
Eu´lo•gize v. t. [ imp. & p. p. Eulogized. ; p. pr. & vb. n. Eulogizing ] To speak or write in commendation of (another); to extol in speech or writing; to praise.

Eulogy
Eu´lo•gy, n. ; pl. Eulogies (#). [Gr., from well speaking; e’y^ well + to speak. Cf. Eulogium, and see Legend.] A speech or writing in commendation of the character or services of a person; as a fitting eulogy to worth.
"Eulogies turn into elegies." Spenser.
Syn. — Encomium; praise; panegyric; applause. — Eulogy, Eulogium, Encomium, Panegyric. The idea of praise is common to all these words. The word encomium is used of both persons and things which are the result of human action, and denotes warm praise. Eulogium and eulogy apply only to persons and are more studied and of greater length. A panegyric was originally a set speech in a full assembly of the people, and hence denotes a more formal eulogy, couched in terms of warm and continuous praise, especially as to personal character. We may bestow encomiums on any work of art, on production of genius, without reference to the performer; we bestow eulogies, or pronounce a eulogium, upon some individual distinguished for his merit public services; we pronounce a panegyric before an assembly gathered for the occasion.

Eulytite
Eu´ly•tite, n. [Gr. e’y^ well + to dissolve.] (Min.) A mineral, consisting chiefly of the silicate of bismuth, found at Freiberg; — called also culytine.

Eumenides
Eu•men´i•des, n. pl. [L., from Gr. lit., gracious goddesses.] (Class. Myth.) A euphemistic name for the Furies of Erinyes.

Eumolpus
Eu•mol´pus, n. [NL., fr. Gr. sweetly singing.] (Zoöl.) A genus of small beetles, one species of which ( E. viti) is very injurious to the vines in the wine countries of Europe.

Eunomian
Eu•no´mi•an, n. (Eccl. Hist.) A follower of Eunomius, bishop of Cyzicus (4th century A. D.), who held that Christ was not God but a created being, having a nature different from that of the Father. — a. Of or pertaining to Eunomius or his doctrine.

Eunomy
Eu´no•my, n. [Gr. ; e’y^ well + law.] Equal law, or a well-adjusted constitution of government. [R.] Mitford.

Eunuch
Eu´nuch, n. [L. eunuchus, Gr., prop., keeping or guarding the couch; couch, bed, + to have, hold, keep.] A male of the human species castrated; commonly, one of a class of such persons, in Oriental countries, having charge of the women’s apartments. Some of them, in former times, gained high official rank. { Eu´nuch, Eu´nuch•ate } v. t. [L. eunuchare.] To make a eunuch of; to castrate. as a man. Creech. Sir. T. Browne.

Eunuchism
Eu´nuch•ism, n. [L. eunuchismus an unmanning, Gr. : cf. F. eunuchisme eunuchism.] The state of being eunuch. Bp. Hall.

Euonymin
Eu•on´y•min, n. (Med.) A principle or mixture of principles derived from Euonymus atropurpureus, or spindle tree.

Euonymus
Eu•on´y•mus, n. [NL. (cf. L. euonymos). fr. Gr., lit., of good name.] (Bot.) A genus of small European and American trees; the spindle tree. The bark is used as a cathartic.

Euornithes
Eu•or•ni´thes, n. pl. [NL., fr., Gr. e’y^ well +, a bird.] (Zoöl.) The division of Aves which includes all the typical birds, or all living birds except the penguins and birds of ostrichlike form.

Euosmitte
Eu•os´mitte, n. [Gr. e’y^ well + a smell.] (Min.) A fossil resin, so called from its strong, peculiar, pleasant odor.

Eupathy
Eu´pa•thy, n. [Gr. comfort, happy condition of the soul. See Eu-, and Pathetic.] Right feeling. [R.] Harris. { Eu•pat´o•rin, Eu•pat´o•rine }, n. (Med.) A principle or mixture of principles extracted from various species of Eupatorium.

Eupatorium
Eu•pa•to´ri•um, n. [NL., fr. Eupator, king of Pontus, said to have used it as a medicine.] (Bot.) A genus of perennial, composite herbs including hemp agrimony, boneset, throughwort, etc.

Eupatrid
Eu´pa•trid, n. [Gr. e’y^ well + father.] One well born, or of noble birth. { Eu•pep´si•a, Eu•pep´sy } n. [NL. eupepsia, Fr. Gr., fr. easy of digestion; e’y^ well + to cook, digest.] (Med.) Soundness of the nutritive or digestive organs; good concoction or digestion; — opposed to dyspepsia.

Eupeptic
Eu•pep´tic, a. [Gr. .] Of or pertaining to good digestion; easy of digestion; having a good digestion; as eupeptic food; an eupeptic man.
"Wrapt in lazy eupeptic fat." Carlyle.

Euphemism
Eu´phe•mism (u"fe•miz’m), n. [Gr. fr. to use word of a good omen; e’y^ well + to speak: cf. F. euphemisme. See Fame.] (Rhet.) A figure in which a harsh or indelicate word or expression is softened; a way of describing an offensive thing by an inoffensive expression; a mild name for something disagreeable. { Eu•phe•mis´tic, Eu•phe•mis´tic•al } a. Pertaining to euphemism; containing a euphemism; softened in expression. — Eu•phe•mis´tic•al•ly, adv.

Euphemize
Eu´phe•mize, v. t. & i. [ imp. & p. p. Euphemized p. pr. & vb. n. Euphemizing.] [Gr. .] To express by a euphemism, or in delicate language; to make use of euphemistic expressions.

Euphoniad
Eu•pho´ni•ad, n. [See Euphony.] (Mus.) An instrument in which are combined the characteristic tones of the organ and various other instruments. [R.] { Eu•phon´ic, Eu•phon´ic•al } a. Pertaining to, or exhibiting, euphony; agreeable in sound; pleasing to the ear; euphonious; as a euphonic expression; euphonical orthography.

Euphonicon
Eu•phon´i•con (u•fon"i•kon), n. [See Euphony.] (Mus.) A kind of upright piano.

Euphonious
Eu•pho´ni•ous, a. Pleasing or sweet in sound; euphonic; smooth-sounding. Hallam. — Eu•pho´ni•ous•ly, adv.

Euphonism
Eu´pho•nism, n. An agreeable combination of sounds; euphony.

Euphonium
Eu•pho´ni•um, n. [NL. See Euphony.] (Mus.) A bass instrument of the saxhorn family.

Euphonize
Eu´pho•nize, v. t. To make euphonic. [R.]

Euphonon
Eu´pho•non, n. [See Euphony.] (Mus.) An instrument resembling the organ in tone and the upright piano in form. It is characterized by great strength and sweetness of tone.

Euphonous
Eu´pho•nous, n. Euphonious. [R.]

Euphony
Eu´pho•ny, n. ; pl. Euphonies (#). [L. euphonia, Gr., fr. sweet-voiced; e’y^ well + sound, voice; akin to to speak: cf. F. euphonie.] A pleasing or sweet sound; an easy, smooth enunciation of sounds; a pronunciation of letters and syllables which is pleasing to the ear.

Euphorbia
Eu•phor´bi•a, n. [NL., fr. L. euphorbea. See Euphorrium.] (Bot.) Spurge, or bastard spurge, a genus of plants of many species, mostly shrubby, herbaceous succulents, affording an acrid, milky juice. Some of them are armed with thorns. Most of them yield powerful emetic and cathartic products. { Eu•phor•bi•a´ceous, Eu•phor´bi•al } a. (Bot.) Of, relating to, or resembling, the Euphorbia family. { Eu•phor´bin, Eu•phor´bine }, n. (Med.) A principle, or mixture of principles, derived from various species of Euphorbia.

Euphorbium
Eu•phor´bi•um, n. [NL., fr. L. euphorbeum, from Gr. ; — so called after Euphorbus, a Greek physician.] (Med.) An inodorous exudation, usually in the form of yellow tears, produced chiefly by the African Euphorbia resinifera. It was formerly employed medicinally, but was found so violent in its effects that its use is nearly abandoned.

Euphotide
Eu´pho•tide, n. [Gr. e’y^ well +,, light. So called because of its pleasing combination of white and green.] (Min.) A rock occurring in the Alps, consisting of saussurite and smaragdite; — sometimes called gabbro.

Euphrasy
Eu´phra•sy (u"fra•sy), n. [NL. euphrasia, fr. Gr. e’yfrasi•a delight, fr. e’yfrai•nein to delight; e’y^ well + frh•n heart, mind: cf. LL. eufrasia, F. eufraise.] (Bot.) The plant eyebright ( Euphrasia officionalis), formerly regarded as beneficial in disorders of the eyes.
"Then purged with euphrasy and rue The visual nerve, for he had much to see." Milton.

Euphroe
Eu´phroe, n. [Etymol. uncertain.] A block or long slat of wood, perforated for the passage of the crowfoot, or cords by which an awning is held up. [Written also uphroe and uvrou.] Knight.

Euphuism
Eu´phu•ism (u"fu•iz’m), n. [Gr. e’yfyh•s well grown, graceful; e’y^ well + fyh• growth, fr. fy•ein to grow. This affected style of conversation and writing, fashionable for some time in the court of Elizabeth, had its origin from the fame of Lyly’s books, "Euphues, or the Anatomy of Wit," and "Euphues and his England."] (Rhet.) An affectation of excessive elegance and refinement of language; high-flown diction.

Euphuist
Eu´phu•ist, n. One who affects excessive refinement and elegance of language; — applied esp. to a class of writers, in the age of Elizabeth, whose productions are marked by affected conceits and high-flown diction.

Euphuistic
Eu•phu•is´tic, a. Belonging to the euphuists, or euphuism; affectedly refined.

Euphuize
Eu´phu•ize, v. t. To affect excessive refinement in language; to be overnice in expression.

Eupione
Eu´pi•one, n. [Gr. very fat; e’y^ well + fat.] (Chem.) A limpid, oily liquid obtained by the destructive distillation of various vegetable and animal substances; — specifically, an oil consisting largely of the higher hydrocarbons of the paraffin series. [Written also eupion.]

Eupittone
Eu•pit´tone, n. [Pref. eu- + pittacal + -one.] (Chem.) A yellow, crystalline substance, resembling aurin, and obtained by the oxidation of pittacal; — called also eupittonic acid. [Written also eupitton.]

Eupittonic
Eu•pit•ton´ic, a. (Chem.) Pertaining to, or derived from, eupittone.

Euplastic
Eu•plas´tic, a. [Pref. eu- + -plastic.] (Med.) Having the capacity of becoming organizable in a high degree, as the matter forming the false membranes which sometimes result from acute inflammation in a healthy person. Dunglison.

Euplastic
Eu•plas´tic, n. (Med.) Organizable substance by which the tissues of an animal body are renewed.

Euplectella
Eu•plec•tel´la, n. [NL., fr. Gr. well plaited; e’y^ well + plaited.] (Zoöl) A genus of elegant, glassy sponges, consisting of interwoven siliceous fibers, and growing in the form of a cornucopia; — called also Venus’s flower-basket.

Euplexoptera
Eu•plex•op´te•ra, n. pl. [NL., fr. Gr. e’y^ well + to plait + a wing.] (Zoöl.) An order of insects, including the earwig. The anterior wings are short, in the form of elytra, while the posterior wings fold up beneath them. See Earwig.

Eupnaea
Eup•nae´a, n. [NL., fr. gr. easy breathing; well + to breathe.] (Physiol.) Normal breathing where arterialization of the blood is normal, in distinction from dyspnaea, in which the blood is insufficiently arterialized. Foster.

Eupyrion
Eu•pyr´i•on, n. [Gr. well + fire.] A contrivance for obtaining a light instantaneously, as a lucifer match. Brande & C.

Eurasian
Eu•ra´sian, n. [ European + Asian.]
1. A child of a European parent on the one side and an Asiatic on the other.
2. One born of European parents in Asia.

Eurasian
Eu•ra´sian, a. Of European and Asiatic descent; of or pertaining to both Europe and Asia; as the great Eurasian plain.

Eurasiatio
Eu•ra•si•at´io, a. (Geog.) Of or pertaining to the continents of Europe and Asia combined.

Eureka
Eu•re´ka [Gr. I have found, perfect indicative of to find.] The exclamation attributed to Archimedes, who is said to have cried out "Eureka! eureka!" (I have found it! I have found it!), upon suddenly discovering a method of finding out how much the gold of King Hiero’s crown had been alloyed. Hence, an expression of triumph concerning a discovery.

Eurhipidurous
Eu•rhip•i•du´rous, a. [Gr. well + a fan + a tail.] (Zoöl.) Having a fanlike tail; belonging to the Eurhipidurae, a division of Aves which includes all living birds.

Euripize
Eu´ri•pize, v. t. [See Euripus.] To whirl hither and thither. [Obs.]

Euripus
Eu•ri´pus, n. [L., fr. Gr. ; well + a rushing motion.] A strait; a narrow tract of water, where the tide, or a current, flows and reflows with violence, as the ancient frith of this name between Eubœa and Bœotia. Hence, a flux and reflux. Burke.

Eurite
Eu´rite (u"rit), n. [Cf. F. eurite.] (Min.) A compact feldspathic rock; felsite. See Felsite.

Euritic
Eu•rit´ic, a. Of or relating to eurite.

Euroclydon
Eu•roc´ly•don, n. [NL., fr. Gr. ; the southeast wind + wave, billow; according to another reading,, i. e. a north-east wind, as in the Latin Vulgate Euro-aquilo.] A tempestuous northeast wind which blows in the Mediterranean. See Levanter.
"A tempestuous wind called Euroclydon." Acts xxvii. 14.

European
Eu•ro•pe´an, a. [L. europeaus, Gr., fr. Gr. (L. europa.)] Of or pertaining to Europe, or to its inhabitants. On the European plan, having rooms to let, and leaving it optional with guests whether they will take meals in the house; — said of hotels. [U. S.]

European
Eu•ro•pe´an, n. A native or an inhabitant of Europe.

Europeanize
Eu•ro•pe´an•ize, v. t. To cause to become like the Europeans in manners or character; to habituate or accustom to European usages.
"A state of society … changed and Europeanized." Lubbock.

Europium
Eu•ro´pi•um, n. [NL.; Europe + -ium, as in alumin ium.] (Chem.) A metallic element of the rare-earth group, discovered spectroscopically by Demarcay in 1896. Symbol, Eu; at. wt., 152.0.

Eurus
Eu´rus, n. [L., gr. .] The east wind.

Euryale
Eu•ry´a•le, n. [NL., fr. Euryale, one of the Gorgons.]
1. (Bot.) A genus of water lilies, growing in India and China. The only species ( E. ferox) is very prickly on the peduncles and calyx. The rootstocks and seeds are used as food.
2. (Zoöl) A genus of ophiurans with much-branched arms.

Euryalida
Eu•ry•al´i•da, n. pl. [NL.] (Zoöl.) A tribe of Ophiuroidea, including the genera Euryale, Astrophyton, etc. They generally have the arms branched. See Astrophyton.

Eurycerous
Eu•ryc´er•ous, a. [Gr. broad + ke•ras horn.] (Zoöl.) Having broad horns.

Eurypteroid
Eu•ryp´ter•oid, a. [ Eurypterus + -oid.] (Paleon.) Like, or pertaining to, the genus Euryperus.

Eurypteroidea
Eu•ryp•te•roi´de•a, n. pl. [NL. See Eurypteroid.] (Paleont.) An extinct order of Merostomata, of which the genus Eurypterus is the type. They are found only in Paleozoic rocks. [Written also Eurypterida.]

Eurypterus
Eu•ryp´te•rus, n. [NL., fr. Gr. broad + a wing.] (Paleon.) A genus of extinct Merostomata, found in Silurian rocks. Some of the species are more than three feet long.

Eurythmy
Eu´ryth•my, n. [L. eurythmia, Gr. ; well + rhythm, measure, proportion, symmetry: cf. F. eurythmie.]
1. (Fine Arts) Just or harmonious proportion or movement, as in the composition of a poem, an edifice, a painting, or a statue.
2. (Med.) Regularly of the pulse.

Eusebian
Eu•se´bi•an, n. (Eccl. Hist.) A follower of Eusebius, bishop of Caesarea, who was a friend and protector of Arius.

Eustachian
Eu•sta´chi•an, a. [From Eustachi, a learned Italian physician who died in Rome, 1574.] (Anat.) (a) Discovered by Eustachius. (b) Pertaining to the Eustachian tube; as Eustachian catheter. Eustachian catheter, a tubular instrument to be introduced into the Eustachian tube so as to allow of inflation of the middle ear through the nose or mouth. — Eustrachian tube (Anat.), a passage from the tympanum of the ear to the pharynx. See Ear. — Eustachian valve (Anat.), a crescent-shaped fold of the lining membrane of the heart at the entrance of the vena cava inferior. It directs the blood towards the left auricle in the fetus, but is rudimentary and functionless in the adult.