/ Dictionary / Index S spheroplast: Meaning and Definition of Find definitions for: sphe•ro•plast Pronunciation: (sfēr'u-plast", sfer'-), [key] — n. Bacteriol. a Gram-negative bacterial cell with a cell wall that has been altered or is partly missing, resulting in a spherical shape. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. spherometer spherule Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language