/ Dictionary / Index I itacolumite: Meaning and Definition of Find definitions for: it•a•col•u•mite Pronunciation: (it"u-kol'yu-mīt"), [key] — n. a sandstone consisting of interlocking quartz grains and mica scales, found principally in Brazil and North Carolina, and noted for its flexibility in thin slabs. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Itabuna itaconic acid Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language