/ Dictionary / Index P phytosociology: Meaning and Definition of Find definitions for: phy•to•so•ci•ol•o•gy Pronunciation: (fī"tō-sō"sē-ol'u-jē, -shē-), [key] — n. the branch of ecology dealing with the origin, composition, structure, and classification of plant communities. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. phytosaur phytosterol 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