单词	chlortetracycline
释义	chlortetracycline noun chlor·​tet·​ra·​cy·​cline ˌklȯr-ˌte-trə-ˈsī-ˌklēn  : a yellow crystalline broad-spectrum antibiotic C22H23ClN2O8 that is produced by a soil actinomycete (Streptomyces aureofaciens) and is sometimes used in animal feeds to stimulate growth Example Sentences Recent Examples on the Web Pig Zero trumpets the benefits of coupling tiamulin with chlortetracycline, a drug made by Elanco’s competitors that both American and international regulators consider medically important to humans. Danny Hakim, New York Times, 7 June 2019 Drugs were marketed by the barrel; a 50-pound chlortetracycline bag advertised in 1972 in The Herald, in Jasper, Ind., cost $9.25. Danny Hakim, New York Times, 7 June 2019 Word History First Known Use 1953, in the meaning defined above Medical Definition chlortetracycline noun chlor·​tet·​ra·​cy·​cline ˌklōr-ˌte-trə-ˈsī-ˌklēn, ˌklȯr-  : a yellow crystalline broad-spectrum antibiotic C22H23ClN2O8 produced by a soil actinomycete of the genus Streptomyces (S. aureofaciens) and sometimes used in animal feeds to stimulate growth see aureomycin
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