polymyxin

polymyxin

[pol-ee-mik-sin]
noun Pharmacology.
any of various polypeptide antibiotics derived from Bacillus polymyxa.

Origin:
1945–50; < Neo-Latin polymyx(a) specific epithet (< Greek poly- poly- + mýxa mucus, slime) + -in2

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World English Dictionary
polymyxin (ˌpɒlɪˈmɪksɪn)
 
n
any of several polypeptide antibiotics active against Gram-negative bacteria, obtained from the soil bacterium Bacillus polymyxa
 
[C20: from New Latin Bacillus polymyxa; see poly-, myxo-, -in]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

polymyxin pol·y·myx·in (pŏl'ē-mĭk'sĭn)
n.
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.
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Encyclopedia Britannica
Encyclopedia

polymyxin

any of five polypeptide antibiotics derived from various species of the soil bacterium Bacillus that are active against gram-negative bacteria such as Escherichia coli and Pseudomonas aeruginosa. Polymyxins disrupt the cell membranes of bacteria, destroying their ability to function as osmotic barriers.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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