出典:Wiktionary
出典:『Wiktionary』 (2025/09/07 18:05 UTC 版)
From Latin intumēscēns, present participle of intumescō (“rise, swell”), from tumescō (“become inflated”).
intumescent (plural intumescents)
出典:Wikipedia
出典:『Wikipedia』 (2011/05/12 20:35 UTC 版)
An intumescent is a substance which swells as a result of heat exposure, thus increasing in volume, and decreasing in density. Intumescents are typically used in passive fire protection and, in America, require listing and approval use and compliance in their installed configurations in order to comply with the law.