form of -ana (q.v.) with nouns whose adjectival forms end in -ian.

a titan, son of Uranus and Gaia; Latinized form of Greek Iapetos, which is of uncertain origin. It has been connected with biblical Japheth or with Greek iaptein "to put forth, send forth" (perhaps as "the one thrown" by Zeus into Tartaros" or "the one who throws" a spear, etc.). Beekes finds these improbable and suggests that, as the name of a pre-Olympian god, it is a Pre-Greek word. 

medical Latin word-forming element used in naming diseases, from Greek -asis, abstract noun suffix (often expressing "disease, morbid condition") from the aorist of verbs in -aein. The -i- is connective.

word-forming element meaning "medical treatment," from French -iatrie, from Greek iatreia "healing, medical treatment" (see -iatric).

word-forming element, from Latinized form of Greek iatrikos "healing," from iatros "physician, healer" (related to iatreun "treat medically," and iasthai "heal, treat"); of uncertain origin, perhaps from iaomai "to cure," related to iaino "heat, warm, cheer," probably from a root meaning "enliven, animate."

word-forming element meaning "a physician; medicine; healing," from Greek iatros "healer, physician" (see -iatric).

"induced by a physician," 1920, from iatro- + -genic.

1869; see beam (n.). So called for its shape. I-bar is from 1890; also I-rail (1873).

from Latin Iberia, the ancient name of the large southwestern peninsula of Europe, from Greek Iberes, the name of a Celtic people of ancient Spain. An identical name was given to an Asiatic people near the Caucasus in what is now Georgia. Of unknown origin in both uses, but the word as applied in Spain is believed to be related to that of the River Ebro. Related: Iberian (c. 1600 as a noun; 1610s as an adjective).

"chamois, wild goat of the Alps and Apennines," c. 1600, from Latin ibex, which probably is from a pre-Latin Alpine language. The German Steinbock.