Definition of intumescent in English:

intumescent

Syllabification: in·tu·mes·cent
Pronunciation: /ˌint(y)o͞oˈmesənt
 
/

adjective

  • (Of a coating or sealant) swelling up when heated, thus protecting the material underneath or sealing a gap in the event of a fire: intumescent fire-retardant paints
    More example sentences
    • Columns of the arcade are simply the rolled steel members of the frame, exposed and made silver with intumescent paint.
    • If alternative panels cannot be used then the ends of the sandwich panels must be sealed and locked together in a non-combustible wall intumescent seal.

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Pronunciation: məˈlôrd
noun
used to address an English nobleman