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[jen-tuh-mahy-sin] /ˌdʒɛn təˈmaɪ sɪn/
noun, Pharmacology.
a highly toxic broad-spectrum antibiotic mixture of related aminoglycoside substances derived from the actinomycete bacterium Micromonospora purpurea, used in its sulfate form in the treatment of severe Gram-negative infections.
Origin of gentamicin
1963; respelling of gentamycin, probably equivalent to gent(ian violet) + -a- (as in kanamycin) + -mycin; so called from the color of the source bacterium Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for gentamicin


a broad-spectrum antibiotic used in the treatment of serious infections
Word Origin
C20: from genta (of unknown origin) + -mycin
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
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gentamicin in Medicine

gentamicin gen·ta·mi·cin or gen·ta·my·cin (jěn'tə-mī'sĭn)
A broad-spectrum antibiotic derived from an actinomycete used in the treatment of various infections.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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