Ileocolic
Il•e•o•col´ic, a. (Anat.) Pertaining to the ileum and colon; as the ileocolic, or ileocaecal, valve, a valve where the ileum opens into the large intestine.

Ileum
Il´e•um, n. [L. ile, ileum, ilium, pl. ilia, groin, flank.]
1. (Anat.) The last, and usually the longest, division of the small intestine; the part between the jejunum and large intestine. [Written also ileon, and ilium.]
2. (Anat.) See Ilium. [R.] Most modern writers restrict ileum to the division of the intestine and ilium to the pelvic bone.

Ilex
I´lex, n. [L., holm oak.] (Bot.) (a) The holm oak ( Quercus Ilex). (b) A genus of evergreen trees and shrubs, including the common holly.

Iliac
Il´i•ac, a. [L. Iliacus, Gr. . See Iliad.] Pertaining to ancient Ilium, or Troy. Gladstone.

Iliac
Il´i•ac, a. [Cf. F. iliaque. See Ileum, and cf. Jade a stone.]
1. (Anat.) Pertaining to, or in the region of, the ilium, or dorsal bone of the pelvis; as the iliac artery. [Written also ileac.]
2. See Ileac, 1. [R.] Iliac crest, the upper margin of the ilium. — Iliac passion. See Ileus. — Iliac region, a region of the abdomen, on either side of the hypogastric regions, and below the lumbar regions.

Iliad
Il´i•ad, n. [L. Ilias, - adis, Gr., (sc. ), fr.,, Ilium, the city of Ilus, a son of Tros, founder of Ilium, which is a poetical name of Troy.] A celebrated Greek epic poem, in twenty-four books, on the destruction of Ilium, the ancient Troy. The Iliad is ascribed to Homer.

Ilial
Il´i•al, a. (Anat.) Pertaining to the ilium; iliac.

Iliche
I•liche´, adv. [OE., fr. AS. gelic. Cf. Alike.] Alike. [Obs.] Chaucer.

Ilicin
Il´i•cin, n. (Chem.) The bitter principle of the holly.

Ilio-
Il´i•o- [From Ilium.] A combining form used in anatomy to denote connection with, or relation to, the ilium; as ilio-femoral, ilio- lumbar, ilio-psoas etc.

Iliolumbar
Il•i•o•lum´bar, a. (Anat.) Pertaining to the iliac and lumbar regions; as the iliolumbar artery.

Iliopsoas
Il•i•o•pso´as, n. (Anat.) The great flexor muscle of the hip joint, divisible into two parts, the iliac and great psoas — often regarded as distinct muscles.

Ilium
Il´i•um, n. [See Ileum.] (Anat.) The dorsal one of the three principal bones comprising either lateral half of the pelvis; the dorsal or upper part of the hip bone. See Innominate bone, under Innominate. [Written also ilion, and ileum.]

Ilk, a. [Scot. ilk, OE. ilke the same, AS. ilca. Cf. Each.] Same; each; every. [Archaic] Spenser. Of that ilk, denoting that a person’s surname and the title of his estate are the same; as Grant of that ilk, i.e., Grant of Grant. Jamieson.

Illabile
Il•lab´ile, a. Incapable of falling or erring; infalliable. [Obs.] — Il•la•bil´i•ty (#), n. [Obs.]

Illacerable
Il•lac´er•a•ble, a. [L. illacerabilis: cf. F. illacerable. See In- not, and Lacerable.] Not lacerable; incapable of being torn or rent. [Obs.]

Illapsable
Il•laps´a•ble, a. [Pref. il- not + lapsable.] Incapable of slipping, or of error. [R.]
"Morally immutable and illapsable." Glanvill.

Illapse
Il•lapse´, v. i. [ imp. & p. p. Illapsed p. pr. & vb. n. Illapsing.] [L. illapsus, p. p. of illabi; pref. il- in + labi to fall, slide.] To fall or glide; to pass; — usually followed by into. Cheyne.

Illapse
Il•lapse´, n. [L. illapsus. See Illapse, v. i.] A gliding in; an immisson or entrance of one thing into another; also a sudden descent or attack. Akenside.
"They sit silent … waiting for an illapse of the spirit." Jeffrey.

Illaqueate
Il•la´que•ate, v. t. [ imp. & p. p. Illaqueated p. pr. & vb. n. Illaqueating.] [L. illaqueatus, p. p. of illaqueare; pref. il- in + laqueare to insnare, fr. laqueus, noose, snare.] To insnare; to entrap; to entangle; to catch.
"Let not the surpassing eloquence of Taylor dazzle you, nor his scholastic retiary versatility of logic illaqueate your good sense." Coleridge.

Illation
Il•la´tion, n. [L. illatio, fr. illatus, used as p. p. of inferre to carry or bring in, but from a different root: cf. F. illation. See 1st In-, and Tolerate, and cf. Infer.] The act or process of inferring from premises or reasons; perception of the connection between ideas; that which is inferred; inference; deduction; conclusion.
"Fraudulent deductions or inconsequent illations from a false conception of things." Sir T. Browne.

Illatively
Il´la•tive•ly, adv. By inference; as an illative; in an illative manner.

Illaudable
Il•laud´a•ble, a. [L. illaudabilis. See In- not, and Laudable.] Not laudable; not praise-worthy; worthy of censure or disapprobation. Milton. — Il•laud´a•bly, adv. [Obs.] Broome.

Ill-bred
Ill´-bred, a. Badly educated or brought up; impolite; incivil; rude. See Note under Ill, adv.

Illegal
Il•le´gal, a. [Pref. il- not + legal: cf. F. illegal.] Not according to, or authorized by, law; specif., contrary to, or in violation of, human law; unlawful; illicit; hence, immoral; as an illegal act; illegal trade; illegal love. Bp. Burnet.

Illegality
Il•le•gal´i•ty, n. ; pl. Illegalities (#). [Cf. F. illegalite.] The quality or condition of being illegal; unlawfulness; as the illegality of trespass or of false imprisonment; also an illegal act.

Illegalize
Il•le´gal•ize, v. t. [ imp. & p. p. Illegalized p. pr. & vb. n. Illegalizing ] To make or declare illegal or unlawful.

Illegalness
Il•le´gal•ness, n. Illegality, unlawfulness.

Illegibility
Il•leg•i•bil´i•ty, n. The state or quality of being illegible.

Illegible
Il•leg´i•ble, a. Incapable of being read; not legible; as illegible handwriting; an illegible inscription. — Il•leg´i•ble•ness, n. — Il•leg´i•bly, adv.

Illegitimacy
Il•le•git´i•ma•cy, n. The state of being illegitimate. Blackstone.

Illegitimate
Il•le•git´i•mate, a.
1. Not according to law; not regular or authorized; unlawful; improper.
2. Unlawfully begotten; born out of wedlock; bastard; as an illegitimate child.
3. Not legitimately deduced or inferred; illogical; as an illegitimate inference.
4. Not authorized by good usage; not genuine; spurious; as an illegitimate word. Illegitimate fertilization, or Illegitimate union (Bot.), the fertilization of pistils by stamens not of their own length, in heterogonously dimorphic and trimorphic flowers. Darwin.

Illegitimate
Il•le•git´i•mate, v. t. [ imp. & p. p. Illegitimated p. pr. & vb. n. Illegitimating.] To render illegitimate; to declare or prove to be born out of wedlock; to bastardize; to illegitimatize.
"The marriage should only be dissolved for the future, without illegitimating the issue." Bp. Burnet.

Illegitimation
Il•le•git•i•ma´tion, n.
1. The act of illegitimating; bastardizing.
2. The state of being illegitimate; illegitimacy. [Obs.]
"Gardiner had performed his promise to the queen of getting her illegitimation taken off." Bp. Burnet.

Illegitimatize
Il•le•git´i•ma•tize, v. t. To render illegitimate; to bastardize.

Illesive
Il•le´sive, a. [Pref. il- not + L. laedere, laesum, to injure.] Not injurious; harmless. [R.]

Illeviable
Il•lev´i•a•ble, a. Not leviable; incapable of being imposed, or collected. [R.] Sir M. Hale.

Ill-favored
Ill•-fa´vored, a. Wanting beauty or attractiveness; deformed; ugly; ill-looking.
"Ill-favored and lean-fleshed." Gen. xli. 3. — Ill•-fa´vored•ly, adv. — Ill•- fa"vored•ness, n.

Illiberal
Il•lib´er•al, a. [L. illiberalis; pref. il- not + liberalis liberal: cf. F. illiberal.]
1. Not liberal; not free or generous; close; niggardly; mean; sordid. "A thrifty and illiberal hand." Mason.
2. Indicating a lack of breeding, culture, and the like; ignoble; rude; narrow-minded; disingenuous.
3. Not well authorized or elegant; as illiberal words in Latin. [R.] Chesterfield.

Illiberalism
Il•lib´er•al•ism, n. Illiberality. [R.]

Illiberality
Il•lib•er•al´i•ty, n. [L. illiberalitas: cf. F. illiberalite.] The state or quality of being illiberal; narrowness of mind; meanness; niggardliness. Bacon.

Illiberalize
Il•lib´er•al•ize, v. t. [ imp. & p. p. Illiberalized p. pr. & vb. n. Illiberalizing ] To make illiberal.

Illiberalness
Il•lib´er•al•ness, n. The state of being illiberal; illiberality.

Illicit
Il•lic´it, a. [L. illicitus; pref. il- not + licitus, p. p. of licere to be allowed or permitted: cf. F. illicite. See In- not, and License.] Not permitted or allowed; prohibited; unlawful; as illicit trade; illicit intercourse; illicit pleasure.
"One illicit … transaction always leads to another." Burke. — Il•lic´it•ly, adv. — Il•lic´it•ness, n.

Illicium
Il•li´ci•um, n. [So called, in allusion to its aroma, from L. illicium an allurement.] (Bot.) A genus of Asiatic and American magnoliaceous trees, having star-shaped fruit; star anise. The fruit of Illicium anisatum is used as a spice in India, and its oil is largely used in Europe for flavoring cordials, being almost identical with true oil of anise.

Illighten
Il•light´en, v. t. To enlighten. [Obs.]

Illimitable
Il•lim´it•a•ble, a. [Pref. il- not + limitable: cf. F. illimitable.] Incapable of being limited or bounded; immeasurable; limitless; boundless; as illimitable space.
"The wild, the irregular, the illimitable, and the luxuriant, have their appropriate force of beauty." De Quincey.
Syn. — Boundless; limitless; unlimited; unbounded; immeasurable; infinite; immense; vast. — Il•lim´it•a•ble•ness, n. — Il•lim´it•a•bly, adv.

Illimitation
Il•lim•it•a´tion, n. [Pref. il- not + limitation: cf. F. illimitation.] State of being illimitable; want of, or freedom from, limitation. Bp. Hall.

Illimited
Il•lim´it•ed, a. Not limited; interminable. Bp. Hall. — Il•lim´it•ed•ness, n.
"The absoluteness and illimitedness of his commission was generally much spoken of." Clarendon.

Illinition
Il•li•ni´tion, n. [L. illinire, illinere, to besmear; pref. il- in, on + linire, linere, to smear.]
1. A smearing or rubbing in or on; also that which is smeared or rubbed on, as ointment or liniment.
2. A thin crust of some extraneous substance formed on minerals. [R.]
"A thin crust or illinition of black manganese." Kirwan.

Illinois
Il•li•nois´, n.sing. & pl. (Ethnol.) A tribe of North American Indians, which formerly occupied the region between the Wabash and Mississippi rivers.

Illiquation
Il•li•qua´tion, n. [Pref. il- in + L. liquare to melt.] The melting or dissolving of one thing into another.

Illish
Ill´ish, a. Somewhat ill. [Obs.] Howell.

Illision
Il•li´sion, n. [L. illisio, fr. illidere, illisum, to strike against; pref. il- in + laedere to strike.] The act of dashing or striking against. Sir T. Browne.

Illiteracy
Il•lit´er•a•cy, n. ; pl. Illiteracies (#). [From Illiterate.]
1. The state of being illiterate, or uneducated; want of learning, or knowledge; ignorance; specifically, inability to read and write; as the illiteracy shown by the last census.
2. An instance of ignorance; a literary blunder.
"The many blunders and illiteracies of the first publishers of his [Shakespeare’s] works." Pope.

Illiterate
Il•lit´er•ate, a. [L. illiteratus: pref. il- not + literatus learned. See In- not, and Literal.] Ignorant of letters or books; unlettered; uninstructed; uneducated; as an illiterate man, or people.
Syn. — Ignorant; untaught; unlearned; unlettered; unscholary. See Ignorant. — Il•lit´er•ate•ly, adv. — Il•lit´er•ate•ness, n.

Ill-judged
Ill´-judged, a. Not well judged; unwise.

Ill-lived
Ill´-lived, a. Leading a wicked life. [Obs.]

Ill-looking
Ill´-look•ing, a. Having a bad look; threatening; ugly. See Note under Ill, adv.

Ill-minded
Ill´-mind•ed, a. Ill- disposed. Byron.

Ill-natured
Ill•-na´tured, a.
1. Of habitual bad temper; peevish; fractious; cross; crabbed; surly; as an ill-natured person.
2. Dictated by, or indicating, ill nature; spiteful. "The ill-natured task refuse." Addison.
3. Intractable; not yielding to culture. [R.] "Ill-natured land." J. Philips. — Ill•-na´tured•ly, adv. — Ill•- na"tured•ness, n.

Illness
Ill´ness, n. [From Ill.]
1. The condition of being ill, evil, or bad; badness; unfavorableness. [Obs.] "The illness of the weather." Locke.
2. Disease; indisposition; malady; disorder of health; sickness; as a short or a severe illness.
3. Wrong moral conduct; wickedness. Shak.
Syn. — Malady; disease; indisposition; ailment. — Illness, Sickness. Within the present century, there has been a tendency in England to use illness in the sense of a continuous disease, disorder of health, or sickness, and to confine sickness more especially to a sense of nausea, or "sickness of the stomach."

Illocality
Il•lo•cal´i•ty, n. Want of locality or place. [R.] Cudworth.

Illogical
Il•log´ic•al, a. Ignorant or negligent of the rules of logic or correct reasoning; as an illogical disputant; contrary of the rules of logic or sound reasoning; as an illogical inference. — Il•log´ic•al•ly, adv. — Il•log´ic•al•ness, n.

Ill-omened
Ill•-o´mened, a. Having unlucky omens; inauspicious. See Note under Ill, adv.

Ill-tempered
Ill•-tem´pered, a.
1. Of bad temper; morose; crabbed; sour; peevish; fretful; quarrelsome.
2. Unhealthy; ill-conditioned. [Obs.]
"So ill-tempered I am grown, that I am afraid I shall catch cold, while all the world is afraid to melt away." Pepys.

Ill-timed
Ill´-timed, a. Done, attempted, or said, at an unsuitable or unpropitious time.

Illtreat
Ill•treat´, v. t. To treat cruelly or improperly; to ill use; to maltreat.

Illude
Il•lude´, v. t. [ imp. & p. p. Illuded; p. pr. & vb. n. Illuding.] [L. illudere, illusum; pref. il- in + ludere to play: cf. OF. illuder. See Ludicrous.] To play upon by artifice; to deceive; to mock; to excite and disappoint the hopes of.

Illuminant
Il•lu´mi•nant, n. [L. illuminans, -antis, p. pr. of illuminare.] That which illuminates or affords light; as gas and petroleum are illuminants. Boyle.

Illuminary
Il•lu´mi•na•ry, a. Illuminative.

Illuminate
Il•lu´mi•nate, v. t. [ imp. & p. p. Illuminated p. pr. & vb. n. Illuminating ] [L. illuminatus, p. p. of illuminare; pref. il- in + luminare to enlighten, fr. lumen light. See Luminous, and cf. Illume, Illumine, Enlimn, Limn.]
1. To make light; to throw light on; to supply with light, literally or figuratively; to brighten.
2. To light up; to decorate with artificial lights, as a building or city, in token of rejoicing or respect.
3. To adorn, as a book or page with borders, initial letters, or miniature pictures in colors and gold, as was done in manuscripts of the Middle Ages.
4. To make plain or clear; to dispel the obscurity to by knowledge or reason; to explain; to elucidate; as to illuminate a text, a problem, or a duty.

Illuminate
Il•lu´mi•nate, v. i. To light up in token or rejoicing.

Illuminate
Il•lu´mi•nate, a. [L. illuminatus, p. p.] Enlightened. Bp. Hall.

Illuminate
Il•lu´mi•nate, n. One who is enlightened; esp., a pretender to extraordinary light and knowledge.

Illuminati
Il•lu•mi•na´ti, n. pl. [L. illuminatus. See Illuminate, v. t., and cf. Illuminee.] Literally, those who are enlightened; — variously applied as follows: —
1. (Eccl.) Persons in the early church who had received baptism; in which ceremony a lighted taper was given them, as a symbol of the spiritual illumination they has received by that sacrament.
2. (Eccl. Hist.) Members of a sect which sprung up in Spain about the year 1575. Their principal doctrine was that, by means of prayer, they had attained to so perfect a state as to have no need of ordinances, sacraments, good works, etc.; — called also Alumbrados, Perfectibilists, etc.
3. (Mod. Hist.) Members of certain associations in Modern Europe, who combined to promote social reforms, by which they expected to raise men and society to perfection, esp. of one originated in 1776 by Adam Weishaupt, professor of canon law at Ingolstadt, which spread rapidly for a time, but ceased after a few years.
4. Also applied to: (a) An obscure sect of French Familists; (b) The Hesychasts, Mystics, and Quietists; (c) The Rosicrucians.
5. Any persons who profess special spiritual or intellectual enlightenment.

Illuminative
Il•lu´mi•na•tive, a. [Cf. F. illuminatif.] Tending to illuminate or illustrate; throwing light; illustrative. "Illuminative reading." Carlyle.

Illuminator
Il•lu´mi•na•tor, n. [L., an enlightener, LL. also an illuminator of books.]
1. One whose occupation is to adorn books, especially manuscripts, with miniatures, borders, etc. See Illuminate, v. t., 3.
2. A condenser or reflector of light in optical apparatus; also an illuminant.

Illuminism
Il•lu´mi•nism, n. [Cf. F. illuminisme.] The principles of the Illuminati.

Illuministic
Il•lu•mi•nis´tic, a. Of or pertaining to illuminism, or the Illuminati.

Illuminize
Il•lu´mi•nize, v. t. [ imp. & p. p. Illuminized p. pr. & vb. n. Illuminizing ] To initiate the doctrines or principles of the Illuminati.

Illure
Il•lure´, v. t. [Pref. il- in + lure.] To deceive; to entice; to lure. [Obs.]
"The devil insnareth the souls of many men, by illuring them with the muck and dung of this world." Fuller.

Ill-used
Ill•-used´, a. Misapplied; treated badly.

Illusion
Il•lu´sion, n. [F. illusion, L. illusio, fr. illudere, illusum, to illude. See Illude.]
1. An unreal image presented to the bodily or mental vision; a deceptive appearance; a false show; mockery; hallucination.
"To cheat the eye with blear illusions." Milton.
2. Hence: Anything agreeably fascinating and charming; enchantment; witchery; glamour.
"Ye soft illusions, dear deceits, arise!" Pope.
3. (Physiol.) A sensation originated by some external object, but so modified as in any way to lead to an erroneous perception; as when the rolling of a wagon is mistaken for thunder. Some modern writers distinguish between an illusion and hallucination, regarding the former as originating with some external object, and the latter as having no objective occasion whatever.
4. A plain, delicate lace, usually of silk, used for veils, scarfs, dresses, etc.
Syn. — Delusion; mockery; deception; chimera; fallacy. See Delusion. Illusion, Delusion. Illusion refers particularly to errors of the sense; delusion to false hopes or deceptions of the mind. An optical deception is an illusion; a false opinion is a delusion. E. Edwards.

Illusionist
Il•lu´sion•ist, n. One given to illusion; a visionary dreamer.

Illusive
Il•lu´sive, a. [See Illude.] Deceiving by false show; deceitful; deceptive; false; illusory; unreal.
"Truth from illusive falsehood to command." Thomson.

Illusiveness
Il•lu´sive•ness, n. The quality of being illusive; deceptiveness; false show.

Illusory
Il•lu´so•ry, a. [Cf. F. illusore.] Deceiving, or tending of deceive; fallacious; illusive; as illusory promises or hopes.

Illustrable
Il•lus´tra•ble, a. Capable of illustration. Sir T. Browne.

Illustrate
Il•lus´trate, v. t. [ imp. & p. p. Illustrated p. pr. & vb. n. Illustrating ] [L. illustratus, p. p. of illustrare to illustrate, fr. illustris bright. See Illustrious.]
1. To make clear, bright, or luminous.
"Here, when the moon illustrates all the sky." Chapman.
2. To set in a clear light; to exhibit distinctly or conspicuously. Shak.
"To prove him, and illustrate his high worth." Milton.
3. To make clear, intelligible, or apprehensible; to elucidate, explain, or exemplify, as by means of figures, comparisons, and examples.
4. To adorn with pictures, as a book or a subject; to elucidate with pictures, as a history or a romance.
5. To give renown or honor to; to make illustrious; to glorify. [Obs.]
"Matter to me of glory, whom their hate Illustrates." Milton.

Illustrate
Il•lus´trate, a. [L. illustratus, p. p.] Illustrated; distinguished; illustrious. [Obs.]
"This most gallant, illustrate, and learned gentleman." Shak.

Illustration
Il•lus•tra´tion, n. [L. illustratio: cf. F. illustration.]
1. The act of illustrating; the act of making clear and distinct; education; also the state of being illustrated, or of being made clear and distinct.
2. That which illustrates; a comparison or example intended to make clear or apprehensible, or to remove obscurity.
3. A picture designed to decorate a volume or elucidate a literary work.

Illustrative
Il•lus´tra•tive, a.
1. Tending or designed to illustrate, exemplify, or elucidate.
2. Making illustrious. [Obs.]

Illustratively
Il•lus´tra•tive•ly, adv. By way of illustration or elucidation. [R.] Sir T. Browne.

Illustrator
Il•lus´tra•tor, n. [L.] One who illustrates.

Illustratory
Il•lus´tra•to•ry, a. Serving to illustrate.

Illustrious
Il•lus´tri•ous, a. [L. illustris, prob. for illuxtris; fr. il- in + the root of lucidus bright: cf. F. illustre. See Lucid.]
1. Possessing luster or brightness; brilliant; luminous; splendid.
"Quench the light; thine eyes are guides illustrious." Beau. & Fl.
2. Characterized by greatness, nobleness, etc.; eminent; conspicuous; distinguished.
"Illustrious earls, renowened everywhere." Drayton.
3. Conferring luster or honor; renowned; as illustrious deeds or titles.
Syn. — Distinguished; famous; remarkable; brilliant; conspicuous; noted; celebrated; signal; renowened; eminent; exalted; noble; glorious. See Distinguished, Famous.

Illustriousness
Il•lus´tri•ous•ness, n. The state or quality of being eminent; greatness; grandeur; glory; fame.

Illustrous
Il•lus´trous, a. [Pref. il- not + lustrous.] Without luster. [Obs. & R.]

Illutation
Il•lu•ta´tion, n. [Pref. il- in + L. lutum mud: cf. F. illutation.] The act or operation of smearing the body with mud, especially with the sediment from mineral springs; a mud bath.

Illuxurious
Il•lux•u´ri•ous, a. Not luxurious. [R.] Orrery.

Ill-will
Ill•-will´ See under Ill, a.

Illy
Il´ly, adv. [A word not fully approved, but sometimes used for the adverb ill.]

Ilmenite
Il´men•ite, n. [So called from Ilmen, a branch of the Ural Mountains.] (Min.) Titanic iron. See Menaccanite.