Dictionary

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

Origin of POLYMYXIN

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

polymyxin

noun poly·myx·in \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

Browse

Next Word in the Dictionary: polyneePrevious Word in the Dictionary: polymythyAll Words Near: polymyxin
April 18, 2015
wimple Hear it
to veil, ripple, or meander
Take a 3-minute break and test your skills!
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears