/ Dictionary / Index P puissance: Meaning and Definition of Find definitions for: pu•is•sance Pronunciation: (py'u-suns, py-is'uns, pwis'uns), [key] — n. Literary. power, might, or force. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: puissance (Thesaurus) puisne puissant Related Content Daily Word Quiz: inutiae Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language