/ Dictionary / Index P phrase structure tree: Meaning and Definition of Find definitions for: phrase' struc"ture tree" Pronunciation: [key] a structural representation of a sentence in the form of an inverted tree, with each node of the tree labeled according to the phrasal constituent it represents. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. phrase-structure rule phrasing Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language