AEcidium
AE•cid´i•um, n. ; pl. AEcidia . [NL., dim. of Gr. injury.] (Bot.) A form of fruit in the cycle of development of the Rusts or Brands, an order of fungi, formerly considered independent plants.

AEdile
AE´dile, n. [L. aedilis, fr. aedes temple, public building. Cf. Edify.] A magistrate in ancient Rome, who had the superintendence of public buildings, highways, shows, etc.; hence, a municipal officer.

AEgean
AE•ge´an, a. [L. Aegeus; Gr. .] Of or pertaining to the sea, or arm of the Mediterranean sea, east of Greece. See Archipelago.

AEgilops
AEg´i•lops, n. [L. aegilopis, Gr., fr., gen., goat + eye.]
1. (Med.) An ulcer or fistula in the inner corner of the eye.
2. (Bot.) (a) The great wild-oat grass or other cornfield weed. Crabb. (b) A genus of plants, called also hardgrass.

AEgis
AE´gis, n. [L. aegis, fr. Gr. a goat skin, a shield, goat, or fr. to rush.] A shield or protective armor; — applied in mythology to the shield of Jupiter which he gave to Minerva. Also fig.: A shield; a protection.

AEgophony
AE•goph´o•ny, n. Same as Egophony.

AEmail ombrant
AE•mail• om•brant" [F., shaded enamel.] (Fine Arts) An art or process of flooding transparent colored glaze over designs stamped or molded on earthenware or porcelain. Ure.

AEneid
AE•ne´id, n. [L. Aeneis, Aeneidis, or -dos: cf. F. enede.] The great epic poem of Virgil, of which the hero is AEneas.

AEolian
AE•o´li•an, a. [L. Aeolius, Gr. .]
1. Of or pertaining to AEolia or AEolis, in Asia Minor, colonized by the Greeks, or to its inhabitants; aeolic; as the AEolian dialect.
2. Pertaining to AEolus, the mythic god of the winds; pertaining to, or produced by, the wind; aërial.
"Viewless forms the aeolian organ play." - Campbell.
AEolian attachment, a contrivance often attached to a pianoforte, which prolongs the vibrations, increases the volume of sound, etc., by forcing a stream of air upon the strings. Moore. — AEolian harp, AEolian lyre, a musical instrument consisting of a box, on or in which are stretched strings, on which the wind acts to produce the notes; - - usually placed at an open window. Moore. — AEolian mode (Mus.), one of the ancient Greek and early ecclesiastical modes.

AEolic
AE•ol´ic (e•ol"ik), a. [L. Aeolicus; Gr. A’ioliko•s.] AEolian, 1; as the AEolic dialect; the AEolic mode. { AE•ol´i•pile, AE•ol´i•pyle }, n. [L. aeolipilae; Aeolus god of the winds + pila a ball, or Gr. gate ( i. e., doorway of AEolus); cf. F. eolipyle.] An apparatus consisting chiefly of a closed vessel (as a globe or cylinder) with one or more projecting bent tubes, through which steam is made to pass from the vessel, causing it to revolve. [Written also eolipile.] Such an apparatus was first described by Hero of Alexandria about 200 years b. c. It has often been called the first steam engine.

AEolic
AE•ol´ic, a. [L. Aeolus, Gr., name of the god of the winds.] (Phys. Geog.) Pertaining to, caused by, or designating, the action of the wind in modifying the earth’s surface; as aeolic erosion; aeolic sand. [Written also eolic.]

AEolotropic
AE•o•lo•trop´ic, a. [Gr. changeful + a turning, to turn.] (Physics) Exhibiting differences of quality or property in different directions; not isotropic. Sir W. Thomson.

AEolotropy
AE•o•lot´ro•py, n. (Physics) Difference of quality or property in different directions.

AEolus
AE´o•lus, n. [L., fr. Gr. .] (Gr. & Rom. Myth.) The god of the winds.

AEon
AE´on, n. A period of immeasurable duration; also an emanation of the Deity. See Eon.

AEpyornis
AE•py•or´nis, n. [Gr. high + bird.] A gigantic bird found fossil in Madagascar.

Aerie
Ae´rie ( 277), n. [OE. aire, eire, air, nest, also origin, descent, OF. aire, LL. area, aera, nest of a bird of prey, perh. fr. L. area an open space (for birds of prey like to build their nests on flat and open spaces on the top of high rocks). Cf. Area.] The nest of a bird of prey, as of an eagle or hawk; also a brood of such birds; eyrie. Shak. Also fig.: A human residence or resting place perched like an eagle’s nest.

AEruginous
AE•ru´gi•nous, a. [L. aeruginosus, fr. aerugo rust of copper, fr. aes copper: cf. F. erugineux.] Of the nature or color of verdigris, or the rust of copper.

AErugo
AE•ru´go, n. [L. aes brass, copper.] The rust of any metal, esp. of brass or copper; verdigris.

Aery
Ae´ry, n. An aerie.

AEsculapian
AEs•cu•la´pi•an, a. Pertaining to AEsculapius or to the healing art; medical; medicinal.

AEsculapius
AEs•cu•la´pi•us, n. [L. Aesculapius, Gr. .] (Myth.) The god of medicine. Hence, a physician.

AEsculin
AEs´cu•lin, n. Same as Esculin.

AEsopian
AE•so´pi•an, E•so´pi•an, a. [L. Aesopius, from Gr., fr. the famous Greek fabulist AEsop .] Of or pertaining to AEsop, or in his manner.

AEsopic
AE•sop´ic, E•sop´ic, a. [L. Aesopicus, Gr. .] Same as AEsopian.

AEsthesiometer
AEs•the•si•om´e•ter, Es•the•si•om´e•ter, n. [Gr. (see AEsthesia) + -meter.] An instrument to measure the degree of sensation, by determining at how short a distance two impressions upon the skin can be distinguished, and thus to determine whether the condition of tactile sensibility is normal or altered.

AEsthesodic
AEs•the•sod´ic, a. [Gr. sensation + a way; cf. F. esthesodique.] (Physiol.) Conveying sensory or afferent impulses; — said of nerves.

AEsthete
AEs´thete, n. [Gr. one who perceives.] One who makes much or overmuch of aesthetics. [Recent] {AEs•thet´ic, AEs•thet´ic•al } a. Of or Pertaining to aesthetics; versed in aesthetics; as aesthetic studies, emotions, ideas persons, etc. — AEs•thet´ic•al•ly, adv.

AEsthetican
AEs•the•ti´can, n. One versed in aesthetics.

AEstheticism
AEs•thet´i•cism, n. The doctrine of aesthetics; aesthetic principles; devotion to the beautiful in nature and art. Lowell.

AEsthetics
AEs•thet´ics, Es•thet´ics ( 277), n. [Gr. perceptive, esp. by feeling, fr. to perceive, feel: cf. G. ästhetik, F. esthetique.] The theory or philosophy of taste; the science of the beautiful in nature and art; esp. that which treats of the expression and embodiment of beauty by art.

AEstho-physiology
AEs•tho-phys•i•ol´o•gy, n. [Gr. to perceive + E. physiology.] The science of sensation in relation to nervous action. H. Spenser.

AEstival
AEs´ti•val, a. [L. aestivalis, aestivus, fr. aestas summer.] Of or belonging to the summer; as aestival diseases. [Spelt also estival.]

AEstivate
AEs´ti•vate, v. i. [L. aestivare, aestivatum.]
1. To spend the summer.
2. (Zoöl.) To pass the summer in a state of torpor. [Spelt also estivate.]

AEstivation
AEs•ti•va´tion, n.
1. (Zoöl.) The state of torpidity induced by the heat and dryness of summer, as in certain snails; — opposed to hibernation.
2. (Bot.) The arrangement of the petals in a flower bud, as to folding, overlapping, etc.; prefloration. Gray. [Spelt also estivation.]

AEstuary
AEs´tu•a•ry ( 135), n. & a. See Estuary.

AEther
AE´ther, n. See Ether.

AEthrioscope
AE´thri•o•scope, n. [Gr. clear + to observe.] An instrument consisting in part of a differential thermometer. It is used for measuring changes of temperature produced by different conditions of the sky, as when clear or clouded.

AEtiological
AE•ti•o•log´ic•al, a. Pertaining to aetiology; assigning a cause. — AE•ti•o•log´ic•al•ly, adv.

AEtiology
AE•ti•ol´o•gy, n. [L. aetologia, Gr. ; cause + description: cf. F. etiologie.]
1. The science, doctrine, or demonstration of causes; esp., the investigation of the causes of any disease; the science of the origin and development of things.
2. The assignment of a cause.