An Encylopedia Britannica Company

penicillin

1 ENTRIES FOUND:
penicillin /ˌpɛnəˈsɪlən/ noun
penicillin
/ˌpɛnəˈsɪlən/
noun
Britannica Dictionary definition of PENICILLIN
[noncount]
: a medicine that is used to kill harmful bacteria