Definition of penicillin in English:


Syllabification: pen·i·cil·lin
Pronunciation: /ˌpenəˈsilən


  • 1An antibiotic or group of antibiotics produced naturally by certain blue molds, and now usually prepared synthetically.
    More example sentences
    • Major classes of antibiotics include tetracyclines, aminoglycosides, penicillins, cephalosporins, fluoroquinolones, streptogramins, sulfonamides, and erythromycins.
    • The antibiotics used were mainly cephalosporins, penicillins, fluoroquinolones, aminoglycosides, tetracyclines and antituberculosis drugs.
    • Most antibiotics such as penicillins, cyclosporines, and aminoglycosides can be used safely during pregnancy, but tetracyclines should be avoided.
  • 2A blue mold of a type that produces penicillin.
    • Genus Penicillium, subdivision Deuteromycotina


from the modern Latin genus name Penicillium (from Latin penicillus 'paintbrush') + -in1.

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Pronunciation: ˌkɒlərəˈtjʊərə
elaborate ornamentation of a vocal melody