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[ri-fam-pin] /rɪˈfæm pɪn/
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 of rifampin
1965-70; probably rifam(yci)n (orig., rifomycin, equivalent to rifo- (perhaps < Italian rifo(rmare) to reform) + -mycin) + pi(perazine) Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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rifampin in Medicine

rifampin ri·fam·pin (rĭ-fām'pĭn) or ri·fam·pi·cin (-pĭ-sĭn)
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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