noun🔗SharePenicilliumAny of the blue-green fungi, of the genus Penicillium, that are used in the manufacture of cheeses, and are an important source of antibiotics."The blue veins in Roquefort cheese are caused by a type of mold called Penicillium. "Les veines bleues du fromage Roquefort sont causées par un type de moisissure appelé Penicillium.organismmicroorganismbiologymedicinesciencefoodchemistryChat with AIVocabulary GamePractice Reading