Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “mildew”

mildew

noun [U]    /ˈmɪlˌdu/
a soft, usually white, green, or black area caused by a fungus that sometimes grows on things such as plants, food, paper, or buildings, esp. if the conditions are warm and wet
(Definition of mildew noun from the Cambridge Academic Content Dictionary © Cambridge University Press)
Focus on the pronunciation of mildew

Definitions of “mildew” in other dictionaries

Translations of “mildew”

Word of the Day

closeness

the quality of knowing someone very well, liking them a lot, and wanting to spend a lot of time together

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More