intumescent

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

intumescent (comparative more intumescent, superlative most intumescent)

1. That becomes swollen, especially upon exposure to heat

• intumescence

intumescent (plural intumescents)

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.

intumēscent

1. third-person plural future active indicative of intumēscō