Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “frost”


noun     /frɒst/
SUBSTANCE [U] B2 a thin , white layer of ice that forms on surfaces , especially at night , when it is very cold Ice
COLD [C] B2 weather that is cold and in which water freezes , especially at night : We're expecting a hard frost tonight .Ice
(Definition of frost noun from the Cambridge Learner's Dictionary © Cambridge University Press)

More Learner's Dictionary definitions for “frost”

Definitions of “frost” in other dictionaries

Word of the Day


relating to behaviour between people that is pleasant and friendly, often despite a difficult situation

Word of the Day


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