/ Dictionary / Index C calamite: Meaning and Definition of Find definitions for: cal•a•mite Pronunciation: (kal'u-mīt"), [key] — n. any fossil plant of the genus Calamites and related genera of the Carboniferous Period, resembling oversized horsetails and constituting much of the coal used as fuel. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. calamint calamitous Related Content Daily Word Quiz: penurious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language