gentamicin
noun
gen·ta·mi·cin ˌjen-tə-ˈmī-sᵊn 
: a broad-spectrum antibiotic mixture derived from an actinomycete (Micromonospora purpurea or M. echinospora) and extensively used as the sulfate in treating infections (as of the urinary tract)
Example Sentences
Recent Examples on the Web Instead, antibiotics commonly used in flu vaccine manufacturing include neomycin, kanamycin, polymyxin B and gentamicin. 
Anne P. Kim, The Conversation, 13 Nov. 2020
Anne P. Kim, The Conversation, 13 Nov. 2020 Word History
Etymology
alteration of earlier gentamycin, from gentian violet + kanamycin; from the color of the actinomycete
First Known Use
1963, in the meaning defined above
Medical Definition
gentamicin
noun
gen·ta·mi·cin ˌjent-ə-ˈmīs-ᵊn
: a broad-spectrum aminoglycoside antibiotic mixture that is derived from two actinomycetes of the genus Micromonospora (M. purpurea and M. echinospora) and is extensively used in the form of the sulfate in treating infections especially of the urinary tract