/ Dictionary / Index P phyllotaxis: Meaning and Definition of Find definitions for: phyl•lo•tax•is Pronunciation: (fil"u-tak'sis), [key] — pl. -tax•es phyllotaxy. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. phyllosilicate phyllotaxy Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language