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The meaning of lagging is present participle of lag:2. See examples of lagging used in a sentence. Business had improved considerably after lagging last year.

There has been an upturn in business travel, but hotel prices are still lagging. The act or process of applying lagging Mechanical engineering, building to line or cover (an excavation) with lagging.

Lagging is special material which is used to cover pipes, water tanks, or the inside of a roof so that heat does not escape from them or so they do not freeze. Sep 23, 2025lagging (usually uncountable, plural laggings) the covering of something with strips of felt, wood etc, either as insulation or for protection. Lagging refers to the delay or slow progress in a process, action, or system.