/ Dictionary / Index P Plantae: Meaning and Definition of Find definitions for: Plan•tae Pronunciation: (plan'tē), [key] — n. (used with a pl. v.) Biol. the taxonomic kingdom comprising all plants. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: plantae (Thesaurus) plant Plantagenet 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