/ Dictionary / Index L law of parsimony: Meaning and Definition of Find definitions for: law' of par'simony Pronunciation: [key] — Philos. Philos. a principle according to which an explanation of a thing or event is made with the fewest possible assumptions. Cf. Occam's razor. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. law of nations law of partial pressures Related Content Daily Word Quiz: effervescent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language