polymyxin


poly·myx·in

noun \ˌpä-lē-ˈmik-sən\

Definition of POLYMYXIN

:  any of several toxic antibiotics obtained from a soil bacterium (Bacillus polymyxa) and active against gram-negative bacteria

Origin of POLYMYXIN

International Scientific Vocabulary, from New Latin polymyxa, from poly- + Greek myxa mucus — more at mucus
First Known Use: 1947

poly·myx·in

noun \ˌpäl-i-ˈmik-sən\   (Medical Dictionary)

Medical Definition of POLYMYXIN

: any of several toxic antibiotics obtained from a soil bacterium of the genus Bacillus (B. polymyxa) and active against gram-negative bacteria

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