WordReference Random House Unabridged Dictionary of American English © 2020
pol•y•myx•in  (pol′ē miksin),USA pronunciation n. [Pharm.]
  1. Drugsany of various polypeptide antibiotics derived from Bacillus polymyxa.
  • Greek poly- poly- + mýxa mucus, slime) + -in2
  • Neo-Latin polymyx(a) specific epithet (
  • 1945–50

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