Meaning of GRAM-NEGATIVE

Pronunciation:			gram 'negutiv
WordNet Dictionary
	Definition:		[adj]  (of bacteria) being or relating to a bacterium that does not retain the violet stain used in Gram's method
	Antonyms:		gram-positive
Biology Dictionary
	Definition:		To describe a prokaryotic cell whose cell wall stains pink (negative) in Gram stain. The cell wall of a gram-negative bacterium contains relatively little peptidoglycan but contains an outer membrane composed of lipopolysaccharide (LPS), lipoprotein, and other complex macromolecules.