Any of various characteristically 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 and in making cheese.

• 青霉菌任何一种长于腐烂的水果和成熟的奶酪上的青霉菌属蓝绿色真菌，用于制造青霉素和奶酪