/ Dictionary / Index P prosenchyma: Meaning and Definition of Find definitions for: pros•en•chy•ma Pronunciation: (pros-eng'ku-mu), [key] — n. Bot. the tissue characteristic of the woody and bast portions of plants, consisting typically of long, narrow cells with pointed ends. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. prosencephalon prose poem Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language