Part 401

I`sa*trop"ic (?), a. [Is- + atropine.] (Chem.) Pertaining to, or designating, an acid obtained from atropine, and isomeric with cinnamic acid.

Is"chi*ac (s"k*k), a. (Anat.) See Ischial.

Is`chi*ad"ic (s`k*d"k), a. [L. ischiadicus, Gr. 'ischiadoko`s, fr. 'ischi`on the hip joint, hip or loin. Cf. Sciatic.] (Anat.) Ischial. [R.]

Ischiadic passion or disease (Med.), a rheumatic or neuralgic affection of some part about the hip joint; -- called also sciatica.

Is"chi*al (s"k*al), a. (Anat.) Of or pertaining to the ischium or hip; ischiac; ischiadic; ischiatic.

Ischial callosity (Zoöl.), one of the patches of thickened, hairless, and often bright-colored skin, on the buttocks of many apes, as the drill.

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Is`chi*at"ic (s`k*d"k), a. (Anat.) Same as Ischial.

Is`chi*o*cap"su*lar (?; 135) a. [Ischium + capsular.] (Anat.) Of or pertaining to the ischium and the capsule of the hip joint; as, the ischiocapsular ligament.

Is`chi*o*ce"rite (?), n. [Gr. 'ischi`on the hip + ke`ras a horn.] (Zoöl.) The third joint or the antennæ of the Crustacea.

{ ||Is"chi*on (?), ||Is"chi*um (?), } n. [L., Gr. 'ischi`on.] 1. (Anat.) The ventral and posterior of the three principal bones composing either half of the pelvis; seat bone; the huckle bone.

2. (Zoöl.) One of the pleuræ of insects.

Is`chi*op"o*dite (?), n. [Gr. 'ischi`on the hip joint + &?;, &?;, foot.] (Zoöl.) The third joint of the typical appendages of Crustacea.

Is`chi*o*rec"tal (?), a. [Ischium + rectal.] (Anat.) Of or pertaining to the region between the rectum and ishial tuberosity.

Is`chu*ret"ic (?), a. Having the quality of relieving ischury. -- n. An ischuretic medicine.

Is"chu*ry (?), n. [L. ischuria, Gr. &?;; &?; to hold, check + &?; urine: cf. F. ischurie.] (Med.) A retention or suppression of urine.

-ise (?). See -ize.

I`sen*trop"ic (?), a. [Is- + entropy + -ic.] (Physics) Having equal entropy.

Isentropic lines, lines which pass through points having equal entropy.

I*seth`i*on"ic (?), a. [Is- + ethionic.] (Chem.) Pertaining to, derived from, or designating, an acid, HO.C2H4.SO3H, obtained as an oily or crystalline substance, by the action of sulphur trioxide on alcohol or ether. It is derivative of sulphuric acid.

-ish (?). [AS. -isc; akin to G. -isch, OHG. -isc, Goth. & Dan. -isk, Gr. &?;. Cf. -esque.] A suffix used to from adjectives from nouns and from adjectives. It denotes relation, resemblance, similarity, and sometimes has a diminutive force; as, selfish, boyish, brutish; whitish, somewhat white.

-ish. [OE. -issen, fr. F. -is, -iss- (found in the present particle, etc., of certain verbs, as finir to finish, fleurir to flourish), corresponding to L. -escere, an inchoative ending.] A verb ending, originally appearing in certain verbs of French origin; as, abolish, cherish, finish, furnish, garnish, impoverish.

Ish"ma*el*ite (?), n. 1. A descendant of Ishmael (the son of Abraham and Hagar), of whom it was said, "His hand will be against every man, and every man's hand against him." Gen. xvi. 12.

2. One at enmity with society; a wanderer; a vagabond; an outcast. Thackeray.

3. See Ismaelian.

Ish"ma*el*i`tish (?), a. Of, pertaining to, or resembling, an Ishmaelite or the Ishmaelites.

I"si*ac (?), a. [L. Isiacus, Gr. &?;, fr. &?;.] Pertaining to the goddess Isis; as, Isiac mysteries.

I"si*cle (?), n. A icicle. [Obs.]