/ Dictionary / Index P phytochemistry: Meaning and Definition of Find definitions for: phy•to•chem•is•try Pronunciation: (fī"tu-kem'u-strē), [key] — n. the branch of biochemistry dealing with plants and plant processes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: phytochemistry (Thesaurus) phytobiology phytochrome Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language