1. Penicillium

noun. genus of fungi commonly growing as green or blue molds on decaying food; used in making cheese and as a source of penicillin.


  • family Moniliaceae
  • fungus genus
  • Moniliaceae

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Sentences with penicillium

1. Noun, singular or mass
But others, like penicillium, are important in creating antibiotics that fight off illness.