penicilloic acid
noun
pen·i·cil·lo·ic acid
ˌpen-ə-sə-ˌlō-ik- 
: any of several acids having the general formula RCONH(C6H10NS)(COOH)2 which are obtained from the penicillins by hydrolytic opening of the lactam ring (as by the action of a beta-lactamase)
Cite this Entry
“Penicilloic acid.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/penicilloic%20acid. Accessed 4 Nov. 2025.
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