/ Dictionary / Index M monopsony: Meaning and Definition of Find definitions for: mo•nop•so•ny Pronunciation: (mu-nop'su-nē), [key] — pl. -nies. the market condition that exists when there is one buyer. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: monopsony (Thesaurus) monoprotic monopteral Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language