avermectin

noun
aver·​mec·​tin | \ ˌā-vər-ˈmek-tən How to pronounce avermectin (audio) \

Medical Definition of avermectin

: any of several macrocyclic lactones that are produced by the fermentation of a soil bacterium (Streptomyces avermitilis) and have anthelmintic and insecticidal properties — see ivermectin

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