Children's, Intermediate and Advanced Online English Dictionary & Thesaurus

Word Explorer
Children's Dictionary
Help
Help
Help
     

pen·i·cil·lin

penicillin

 
pronunciation:
pe n sI ln
features:
Word Explorer
part of speech: noun
definition: a kind of mold that is used to make medicines. Penicillin kills some kinds of bacteria that cause diseases.
Word Explorer
See
  bacteria, disease, drug