| an extraordinary or unusual thing, person, or event; an exceptional example or instance. |
| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |
penicillium pen·i·cil·li·um (pěn'ĭ-sĭl'ē-əm)
n. pl. pen·i·cil·li·ums or pen·i·cil·li·a (-sĭl'ē-ə)
Any of various bluish-green fungi of the genus Penicillium that grow as molds on decaying fruits and ripening cheese and are used in the production of penicillin.
Penicillium n.
A genus of fungi of the class Ascomycetes, some species of which yield several antibiotic substances and biologics.
| penicillium (pěn'ĭ-sĭl'ē-əm) Pronunciation Key
Plural penicilliums or penicillia Any of various bluish-green fungi of the genus Penicillium, that grow as molds on decaying fruits, ripening cheeses, and bread, and are used to produce penicillin and certain other antibiotics. |