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 (ăk-tĭn′ō-mī′sĭn, ăk′tə-nō-)
Any of a class of peptide-containing, often toxic antibiotics that are obtained from soil bacteria.


(Pharmacology) any of several toxic antibiotics obtained from bacteria of the genus Streptomyces, used in treating some cancers; the most commonly used is dactinomycin (actinomycin D)


(ækˌtɪn oʊˈmaɪ sɪn, ˌæk tə noʊ-)

any of a group of related antibiotics derived from streptomyces bacteria, used in the treatment of various cancers.
[1935–1940; actinomyc (es) + -in1]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.actinomycin - any of various red antibiotics isolated from soil bacteria
antibiotic, antibiotic drug - a chemical substance derivable from a mold or bacterium that can kill microorganisms and cure bacterial infections; "when antibiotics were first discovered they were called wonder drugs"
References in periodicals archive ?
Studies of the binding of actinomycin related compounds to DNA.
Actinomycin D inhibitich of desoxiribonucleic acid-dependent synthesis of ribonucleic acid.
Effect of actinomycin D on cellular nucleic acid synthesis and virus production.