strep·​to·​thri·​cin ˌstrep-tə-ˈthrī-sᵊn How to pronounce streptothricin (audio) -ˈthri- How to pronounce streptothricin (audio)
: any of a group of related basic antibiotics produced by a streptomyces (Streptomyces lavendulae) and active especially against bacteria

Word History


New Latin Streptothric-, Streptothrix, genus of bacteria, from strepto- + Greek trich-, thrix hair

First Known Use

1926, in the meaning defined above

Time Traveler
The first known use of streptothricin was in 1926

Dictionary Entries Near streptothricin

Cite this Entry

“Streptothricin.” Dictionary, Merriam-Webster, Accessed 24 Apr. 2024.

Medical Definition


strep·​to·​thri·​cin ˌstrep-tō-ˈthrīs-ᵊn How to pronounce streptothricin (audio) -ˈthris- How to pronounce streptothricin (audio)
: a basic antibiotic C19H34N8O8 that is produced by a soil actinomycete of the genus Streptomyces (S. lavendulae) and is active especially against bacteria
also : any of several related antibiotics
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