[ pol-ee-mik-sin ]
/ ˌpɒl iˈmɪk sɪn /
any of various polypeptide antibiotics derived from Bacillus polymyxa.
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a person who acts as though he or she knows everything and who dismisses the opinions, comments, or suggestions of others.
a person who spends possessions or money extravagantly or wastefully; spendthrift.
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Words nearby polymyxin
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
British Dictionary definitions for polymyxin
/ (ˌpɒlɪˈmɪksɪn) /
any of several polypeptide antibiotics active against Gram-negative bacteria, obtained from the soil bacterium Bacillus polymyxa
Word Origin for polymyxin
C20: from New Latin Bacillus polymyxa; see poly-, myxo-, -in
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Medical definitions for polymyxin
[ pŏl′ē-mĭk′sĭn ]
Any of various mainly toxic antibiotics derived from strains of the soil bacterium Bacillus polymyxa and used to treat various infections with gram-negative bacteria.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.