/ Dictionary / Index C captan: Meaning and Definition of Find definitions for: cap•tan Pronunciation: (kap'tan, -tun), [key] — n. a powder, CHClNOS, of white to cream color, used as a fungicide on vegetables, fruits, and flowers. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. captain's mast caption Related Content Daily Word Quiz: hedonist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language