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mildew

noun [U]
 
 
/ˈmɪl.djuː/ US  /-duː/

Definition

a black, green, or whitish area caused by a fungus that grows on things such as plants, paper, cloth, or buildings, usually if the conditions are warm and wet: There are patches of mildew on the walls.Bacteria, moulds, germs and viruses mildewed
 
 
/-djuːd/ US  /-duːd/ adjective
mildewed rose bushesBacteria, moulds, germs and viruses
(Definition of mildew noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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