/ Dictionary / Index P phylloxera: Meaning and Definition of Find definitions for: phyl•lox•e•ra Pronunciation: (fil"uk-sēr'u, fi-lok'sur-u), [key] — pl. phyl•lox•e•rae phyl•lox•e•ras. any of several plant lice of the genus Phylloxera, esp. P. vitifoliaewhich attacks the leaves and roots of grapevines. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: phylloxera (Thesaurus) -phyllous phylo- 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