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
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More Definitions for polymyxin
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