The American Heritage® Dictionary of the English Language, 4th Edition
n. An antibiotic, C11H12Cl2N2O5, derived from the soil bacterium Streptomyces venezuelae or produced synthetically and effective against a broad spectrum of microorganisms.
n. A broad-spectrum antibiotic originally derived from the bacterium Streptomyces venezuelae but now produced synthetically
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. an oral antibiotic (trade name Chloromycetin) used to treat serious infections (especially typhoid fever)
Word Usage
"In the surgical intensive care unit where patient 9 had been sent, the hospital was conducting a drug trial of an older antibiotic called chloramphenicol."