/ Dictionary / Index D determinable: Meaning and Definition of Find definitions for: de•ter•mi•na•ble Pronunciation: (di-tûr'mu-nu-bul), [key] — adj. capable of being determined. subject to termination. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: determinable (Thesaurus) deterioration determinacy Related Content Daily Word Quiz: designate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language