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vapor barrier Syllabification: va·por bar·ri·er

Entry from US English dictionary

Definition of vapor barrier in English:

noun

A thin layer of impermeable material, typically polyethylene sheeting, included in building construction to prevent moisture from damaging the fabric of the building.

Definition of vapor barrier in:

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Word of the day innocuous
Pronunciation: ɪˈnɒkjʊəs
adjective
not harmful or offensive