Gram-positive

== English == === Alternative forms === gram-positive === Etymology === From Gram (“a surname”) + positive, after Danish bacteriologist Hans Christian Gram, who invented the Gram staining method. === Adjective === Gram-positive (not comparable) (bacteriology, of a bacterium) That stains dark blue or violet after Gram staining, due to large quantities of peptidoglycan in the cell wall. ==== Coordinate terms ==== Gram-negative === See also === Gram staining Gram's method