View your list of saved words. (You can log in using Facebook.)
Conspicuous mass of threadlike hyphae (seemycelium) and fruiting structures produced by various fungi (kingdom Fungi; seefungus). Mildew grows on cloth, fibres, leather goods, and plants, using these substances as food for growth and reproduction. Downy mildew and powdery mildew are plant diseases that affect hundreds of species.
This entry comes from Encyclopædia Britannica Concise. For the full entry on mildew, visit Britannica.com.