intumescent

adjective

in·tu·mes·cent | \ˌin-tü-ˈme-sᵊnt,

-tyü-\

Definition of intumescent

of paint

: swelling and charring when exposed to flame

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Time Traveler for intumescent

The first known use of intumescent was in 1953

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intumescent

adjective

in·tu·mes·cent | \-ᵊnt

\

Medical Definition of intumescent

: marked by intumescence

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