Intumescent

//ɪntjʊˈmɛsənt// adj, noun

Definitions

Adjective
  1. 1
    That becomes swollen, especially upon exposure to heat. not-comparable
Adjective
  1. 1
    abnormally distended especially by fluids or gas wordnet
Noun
  1. 1
    Any substance that swells on exposure to heat, thus increasing in volume and decreasing in density.

    "Intumescents are used in some fire protection systems."

Etymology

Etymology 1

From Latin intumēscēns, present participle of intumescō (“rise, swell”), from tumescō (“become inflated”).

Etymology 2

From Latin intumēscēns, present participle of intumescō (“rise, swell”), from tumescō (“become inflated”).

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