de·mec·lo·cy·cline noun \ˌdem-ə-klō-ˈsī-ˌklēn\
: a broad-spectrum tetracycline antibiotic produced by an actinomycete of the genus Streptomyces (S. aureofaciens) and used especially in the form of its hydrochloride C21H21ClN2O8·HCl
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