rifampin

[ri-fam-pin]
noun Pharmacology.
a semisynthetic broad-spectrum antibiotic, C 4 3 H 5 8 N 4 O 1 2 , used in the treatment of pulmonary tuberculosis, asymptomatic carriers of meningococcal disease, and leprosy.

Origin:
1965–70; probably rifam(yci)n (orig., rifomycin, equivalent to rifo- (perhaps < Italian rifo(rmare) to reform) + -mycin) + pi(perazine)

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World English Dictionary
rifampicin or (US) rifampin (rɪˈfæmpɪsɪn, rɪˈfæmpɪn)
 
n
a drug used in the treatment of tuberculosis, meningitis, and leprosy
 
[C20: from rifam(y)cin, from Rififi, nickname of the original culture + -mycin + inserted pi(perazine)]
 
rifampin or (US) rifampin
 
n
 
[C20: from rifam(y)cin, from Rififi, nickname of the original culture + -mycin + inserted pi(perazine)]

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American Heritage
Medical Dictionary

rifampin ri·fam·pin (rĭ-fām'pĭn) or ri·fam·pi·cin (-pĭ-sĭn)
n.
A semisynthetic antibiotic, derived from a form of rifamycin, that interferes with the synthesis of RNA and is used to treat bacterial and viral diseases.

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
If the antibiotic is not working and the health care provider suspects antibiotic resistance, vancomycin or rifampin are used.
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