bacitracin

[bas-i-trey-sin]
noun Pharmacology.
an antibiotic polypeptide derived by the hydrolytic action of Bacillus subtilis on protein, primarily used topically in the treatment of superficial infections caused by susceptible Gram-positive organisms.

Origin:
1940–45; baci(llus) + (Margaret) Trac(y) (born 1936), American child whose tissues were found to contain Bacillus subtilis + -in2

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World English Dictionary
bacitracin (ˌbæsɪˈtreɪsɪn)
 
n
an antibiotic used mainly in treating bacterial skin infections: obtained from the bacterium Bacillus subtilis
 
[C20: baci(llus) + -trac- from Margaret Tracy (born 1936), American girl in whose blood Bacillus subtilis was found; see -in]

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American Heritage
Medical Dictionary

bacitracin bac·i·tra·cin (bās'ĭ-trā'sĭn)
n.
A polypeptide antibiotic obtained from a strain of the bacterium Bacillus subtilis and used as a topical treatment for certain bacterial infections, especially those caused by cocci.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
Usually you use bacitracin on the tat for a couple of weeks afterward, and keep it out of the sun.
Bacitracin zinc is a medicine applied to cuts and other skin wounds to help prevent infection.
Bacitracin is a germ-killing medicine called an antibiotic, which is used to treat infections.
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