/ Dictionary / Index A alternant: Meaning and Definition of Find definitions for: al•ter•nant Pronunciation: (ôl'tûr-nunt, al'- or, esp. Brit., ôl-tûr'nunt, al-), [key] — adj. alternating; alternate. —n. a variant form that exists in alternation with another or others. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. altern alternate Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language