[klawr-am-fen-i-kawl, -kol, klohr-]

noun Pharmacology.

a colorless, crystalline, slightly water-soluble antibiotic, C11H12Cl2N2O5, obtained from cultures of Streptomyces venezuelae or synthesized: used chiefly in the treatment of infections caused by certain bacteria, by rickettsiae, and by certain viruses.

Origin of chloramphenicol

First recorded in 1945–50; chlor-2 + am(ido)- + phe(n)- + ni(tr)- + (gly)col Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for chloramphenicol



a broad-spectrum antibiotic used esp in treating typhoid fever and rickettsial infections: obtained from the bacterium Streptomyces venezuelae or synthesized. Formula: C 11 H 12 N 2 O 5 Cl 2

Word Origin for chloramphenicol

C20: from chloro- + am (ido) - + phe (no) - + ni (tro) - + (gly) col
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

chloramphenicol in Medicine


[klôr′ăm-fĕnĭ-kôl′, -kōl′]


A broad-spectrum antibiotic derived from the soil bacterium Streptomyces venezuelae or produced synthetically.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

chloramphenicol in Science


[klôr′ăm-fĕnĭ-kôl′, -kōl′]

An antibiotic derived from the soil bacterium Streptomyces venezuelae or produced synthetically, and effective against a broad spectrum of microorganisms. Chemical formula: C11H12Cl2N2O5.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.