Webster's Dictionary 1913

4969

Irruption

Ir‐rup″tion (?), n. [L. irruptio: cf. F. irruption. See Irrupted.]1. A bursting in; a sudden, violent rushing into a place; as, irruptions of the sea.Lest evil tidings, with too...

4970

Irruptive

Ir‐rup″tive (?), a. Rushing in or upon.

4971

Irvingite

Ir″ving‐ite (?), n.(Eccl.) The common designation of one a sect founded by the Rev. Edward Irving (about 1830), who call themselves the Catholic Apostolic Church. They are highl...

4972

Is

Is (?), v. i. [AS. is; akin to G. & Goth. ist, L. est, Gr. �, Skr. asti. √9. Cf. Am, Entity, Essence, Absent.] The third person singular of the substantive verb be, in the indic...

4973

Is-

Is– (?). See Iso-.

4974

Is't

Is't (?). A contraction of is it.

4975

Isabel

{ Is″a‐bel (?), n., Is″a‐bel col″or (?). } [F. isabelle.] See Isabella.

4976

Isabella

{ Is′a‐bel″la (?), n., Is′a‐bel″la col″or (?) }. [Said to be named from the Spanish princess Isabella, daughter of king Philip II., in allusion to the color assumed by her shift...

4977

Isabella grape

Is′a‐bel″la grape′ (?). (Bot.) A favorite sweet American grape of a purple color. See Fox grape, under Fox.

4978

Isabella moth

Is′a‐bel″la moth′ (?; 115). (Zoöl.) A common American moth (Pyrrharctia isabella), of an isabella color. The larva, called woolly bear and hedgehog caterpillar, is densely cover...

4979

Isabelline

Is′a‐bel″line (?), a. Of an isabel or isabella color.

4980

Isagelous

Is‐ag″e‐lous (īs‐ăg″ĕ‐lŭs), a. [Is- + Gr. άγελοσ information.] Containing the same information; as, isagelous sentences. “The coded message and the original, though appearing en...

4981

Isagoge

I″sa‐goge (?), n. An introduction. Harris.

4982

Isagogic

{ I″sa‐gog″ic (?), I″sa‐gog″ic‐al (?), } a. [L. isagogicus, Gr. �.] Introductory; especially, introductory to the study of theology.

4983

Isagogics

I″sa‐gog″ics (?), n.(Theol.) That part of theological science directly preliminary to actual exegesis, or interpretation of the Scriptures.

4984

Isagon

I″sa‐gon (ī″sȧ‐gŏn), n. [Gr. ἴσοσ equal + γωνία angle: cf. F. isagone, a.] (Math.) A figure or polygon whose angles are equal.

4985

Isapostolic

Is‐ap′os‐tol″ic (?), a. Having equal, or almost equal, authority with the apostles of their teachings.

4986

Isatic

{ I‐sat″ic (?), I′sa‐tin″ic (?), } a.(Chem.) Pertaining to, or derived from, isatin; as, isatic acid, which is also called trioxindol.

4987

Isatide

I″sa‐tide (?), n.(Chem.) A white crystalline substance obtained by the partial reduction of isatin. [Written also isatyde.]

4988

Isatin

I″sa‐tin (?), n. [See Isatis.] (Chem.) An orange-red crystalline substance, C8H5NO2, obtained by the oxidation of indigo blue. It is also produced from certain derivatives of be...

4989

Isatis

‖I″sa‐tis (?; 277), n.(Bot.) A genus of herbs, some species of which, especially the Isatis tinctoria, yield a blue dye similar to indigo; woad.

4990

Isatogen

I‐sat″o‐gen (?), n. [Isatin + -gen.] (Chem.) A complex nitrogenous radical, C8H4NO2, regarded as the essential residue of a series of compounds, related to isatin, which easily ...

4991

Isatropic

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

4992

Ischiac

Is″chi‐ac (ĭs″kĭ‐ăk), a.(Anat.) See Ischial.

4993

Ischiadic

Is′chi‐ad″ic (ĭs′kĭ‐ăd″ĭk), a. [L. ischiadicus, Gr. ισχιαδοκὄσ, fr. ισχἴον the hip joint, hip or loin. Cf. Sciatic.] (Anat.) Ischial.Ischiadicpassion or disease(Med.), a rheumat...

4994

Ischial

Is″chi‐al (ĭs″kĭ‐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 of...

4995

Ischiatic

Is′chi‐at″ic (ĭs′kĭ‐ăd″ĭk), a.(Anat.) Same as Ischial.