/ Dictionary / Index T treatable: Meaning and Definition of Find definitions for: treat•a•ble Pronunciation: (trē'tu-bul), [key] — adj. able to be treated, esp. medically: Some diseases are treatable but not curable. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. treat treatise Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language