polymyxin

noun
poly·myx·in | \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

First Known Use of polymyxin

1947, in the meaning defined above

History and Etymology for polymyxin

International Scientific Vocabulary, from New Latin polymyxa, from poly- + Greek myxa mucus — more at mucus

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The first known use of polymyxin was in 1947

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polymyxin

noun
poly·myx·in | \ˌpäl-i-ˈmik-sən \

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

More from Merriam-Webster on polymyxin

Britannica.com: Encyclopedia article about polymyxin

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