Ichthyopsida, ik-thi-op′si-da, n.pl. one of three primary groups of vertebrates in Huxley's classification (the other two, Sauropsida and Mammalia), comprising the amphibians or batrachians and the fish and fish-like vertebrates. [Gr. ichthys, fish, opsis, appearance.]
Ichthyornis, ik-thi-or′nis, n. a fossil bird with vertebræ like those of fishes, and with teeth set in sockets. [Gr. ichthys, a fish, ornis, a bird.]
Ichthyosauria, ik-thi-o-sawr′i-a, n. an order of gigantic extinct marine reptiles, uniting some of the characteristics of the Saurians with those of fishes.—adj. Ichthyosaur′ian.—n. Ich′thyosaurus. [Gr. ichthys, a fish, sauros, a lizard.]
Ichthyosis, ik-thi-ō′sis, n. a disease in which the skin becomes hardened, thickened, rough, and almost horny in severe cases.—adj. Ichthyot′ic. [Gr. ichthys, a fish.]
Icthyotomy, ik-thi-ot′o-mi, n. the anatomy of fishes.—n. Ichthyot′omist.
Ichthys, ik′this, n. an emblem or motto (ΙΧΘΥΣ) supposed to have a mystical connection with Jesus Christ, being the first letters of the Greek words meaning 'Jesus Christ, Son of God, Saviour.'
Icicle, īs′i-kl, n. a hanging point of ice formed by the freezing of dropping water. [A.S. ísgicel, for isesgicel; ises being the gen. of ís, ice, and gicel, an icicle; cf. Ice. jökull.]
Icon, ī′kon, n. a figure, esp. in the Greek Church, representing Christ, or a saint, in painting, mosaic, &c.—adj. Icon′ic.—n. Iconog′raphy, the art of illustration.—adj. Iconomat′ic, expressing ideas by means of pictured objects.—ns. Iconomat′icism; Iconoph′ilism, a taste for pictures, &c.; Iconoph′ilist, a connoisseur of pictures, &c.; Iconos′tasis, a wooden wall which in Byzantine churches separates the choir from the nave—the icons are placed on it. [L.,—Gr. eikōn, an image.]
Iconoclasm, ī-kon′o-klazm, n. act of breaking images.—n. Icon′oclast, a breaker of images, one opposed to idol-worship, esp. those at the commencement in the Eastern Church, who from the 8th century downwards opposed the use of sacred images, or at least the paying of religious honour to such: any hot antagonist of the beliefs of others.—adj. Iconoclast′ic, pertaining to iconoclasm. [Gr. eikōn, an image, klastēs, a breaker—klan, to break.]
Iconology, ī-kon-ol′o-ji, n. the doctrine of images, especially with reference to worship.—ns. Iconol′ater, an image-worshipper; Iconol′atry, the worship of images; Iconol′ogist; Iconom′achist, one opposed to the cultus of icons; Iconom′achy, opposition to the same. [Gr. eikōn, an image, logia, discourse.]