/ Dictionary / Index P phytobiology: Meaning and Definition of Find definitions for: phy•to•bi•ol•o•gy Pronunciation: (fī"tō-bī-ol'u-jē), [key] — n. the branch of biology dealing with plants. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. phytoalexin phytochemistry 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