/ Dictionary / Index P physical chemistry: Meaning and Definition of Find definitions for: phys'ical chem'istry Pronunciation: [key] the branch of chemistry dealing with the relations between the physical properties of substances and their chemical composition and transformations. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. physical anthropology physical double star Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language