gram-negative

adjective gram-neg·a·tive \ ˈgram-ˈne-gə-tiv \

Definition of gram-negative

: not holding the purple dye when stained by Gram's stain used chiefly of bacteria

First Known Use of gram-negative

1907

in the meaning defined above

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Medical Dictionary

gram-negative

adjective gram-neg·a·tive \ ˈgram-ˈneg-ət-iv \

medical Definition of gram-negative

: not holding the purple dye when stained by Gram's stain used chiefly of bacteria

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