het·​a·​cil·​lin ˌhet-ə-ˈsil-ən How to pronounce hetacillin (audio)
: a semisynthetic oral penicillin C19H23N3O4S that is converted to ampicillin in the body and has medical uses similar to those of ampicillin

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Cite this Entry

“Hetacillin.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/hetacillin. Accessed 26 Feb. 2024.

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