Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “lagging”


noun [U]     /ˈlæɡ.ɪŋ/
a thick layer of material used to cover pipes , water tanks (= large containers ), and other surfaces in order to stop heat from escaping or water from freezing Building materialsCoverings and layers
(Definition of lagging noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of lagging

Translations of “lagging”

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