idotheIdæ

pl. [Mod. Latin i do the (a); Lat. fem. pl. adj. suff. -idæ.] Zool .: A family of Cursoríal Isopod a. It consists of small, elongated, marine crustaceans, having the posterior abdominal feet modified into a pair of flat appendages, and the outer antenne often very long. id-ri-a-lin, Id-ri-a-line, s. [IDRIALITE.] Chemistry: 1. ( Of both forms): C42H28O. A white crystalline substance, extracted from idrialite. It can be obtained either by dry distillation in an atmosphere of hydrogen or or carbon dioxide, or by boiling the mineral in oil of turpentine, the liquid on cooling depositing impure idrialin. It is insoluble in water even on boiling, and very slightly soluble in alcohol and ether. The best solvent is oil of turpentine or amylic alcohol. Heated with sulphuric acid, an intense blue color is formed; with nitric acid an insoluble red powder is produced. Idrialin was long supposed to be a hydrocarbon, but it is now proved to contain oxygen. 2. ( Of the form idrialine): [IDRIALITE.] Id-ri-al-ite, subst . [Named from the mines of Idria, in Carinthia; suff. -ite ( Min . ) (q. v.).] Min.: A crystallized white mineral. Composition: Carbon, 94-5-94-8; hydrogen, 5.1-5.5. Called also Idrialine. I-děl, i-dyll, s. [Lat. idyllium ; from Greek eidyllion =a short, descriptive, pastoral poem; eidos = form, resemblance, figure; Fr. idylle ; Ital. idillio ; Sp. idilio .] A short poem, the subject, or at least a nece ary accompaniment of which, is a simple description of pastoral nature, life, and scenery, or of events in pastoral life; as the idyls of Theocritus among the ancients; Goldsmith's Deserted Village , . Tennyson has given the name "Idylls" to a series of poems founded on incidents in the Arthur i an legend. 1-dyl-lic, a . [Eng. idyl; -ic.] Of or pertaining to idyls; of the nature of an idyl; descriptive of pastoral life or scenery. 1. ē., phr . [Lat. id est .) A contraction for id est =that is. that is to say. If, *ef, *gef, *gif, *giff, *yif, *yf, conj . [A. S. gif ; cogn. with Icel. ef , if Dut. of O. Fries. ief , gef , ef, of ; O. Sax. ef , of ; Goth. iba , ibai ; O. H. Ger. ibu , ipu, upi, upa; Ger. ob ; Wel. o. Horne Tooke's plausible gue that the A. S. gif is the imperative mood of gif an =to give, has no foundation, and is entirely opposed to the results of comparative philology.] 1. A hypothetical particle, introducing a conditional sentence, and suffering or granting that, in case that, allowing that. " If they have done this deed, my noble lord. If ! talk'st thou to me of ifs Thou art a traitor." Shakesp.: Richard III . , iii. 4. 2. Whether. IMG:content-1450.png:[blocks in formation] ignitible *Ig-na-rō, s. [Ital., from Latin ignarus =ignorant.] An ignorant person, a blockhead. "It was intolerable insolence in such ignaroes to chal. lenge this for Popery."-Mountagu: Appeale to Casar, ch. xxx i. Ig-nā-ti-ŭs (tas sh), s . [From Ignatius Loyola, founder of the order of Jesuits.) (See the etym. and the compound.) Ignatius-bean, s . Bot.: The seeds of the so-called Ignatia amara; but the genus Ignatia is now given up, having been founded on fragments of two different plants not akin to each other. St. Ignatius-beans, called in parts of India Papeeta, have been given in cases of choiera, but, if an overdose be taken, giddine and convulsions will ensue. They are supposed to come from a species of Strychnos, perhaps S. mul tiflora . Ig-ně-ous, a . [Lat. igneus , from ignis =fire.] 1. Ord. Lang.: Containing or of the nature of fire; fiery, emitting fire, resembling fire. "Those igneous corpuscles that flow from the sun, or both of them."- Boyle : Works , i. 223. 2. Bot .: Flame-colored, very lively scarlet, fiery red.