/ Dictionary / Index T terpin hydrate: Meaning and Definition of Find definitions for: ter'pin hy'drate Pronunciation: (tûr'pin), [key] — Pharm. Pharm. a white, crystalline powder, CHO&multiplydot;HO, usually used in combination with codeine, as an expectorant. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. terpineol terpolymer Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language