/ Dictionary / Index S spongy parenchyma: Meaning and Definition of Find definitions for: spon'gy paren'chyma Pronunciation: [key] — Bot. Bot. the lower layer of the ground tissue of a leaf, characteristically containing irregularly shaped cells with relatively few chloroplasts and large intercellular spaces. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. spongy sponsion Related Content Daily Word Quiz: stringent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language