/ Dictionary / Index G Gram-variable: Meaning and Definition of Find definitions for: Gram-var•i•a•ble Pronunciation: (gram'vâr'ē-u-bul), [key] — adj. of or pertaining to bacteria that stain irregularly with Gram's stain, being neither Gram-positive nor Gram-negative. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Gram's solution gran 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