/ Dictionary / Index L law of partial pressures: Meaning and Definition of Find definitions for: law' of par'tial pres'sures Pronunciation: [key] — Physics, Chem. Physics,Chem. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. law of parsimony law of reflection Related Content Daily Word Quiz: alacrity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language