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intumescent

adjective in·tu·mes·cent \ ˌin-tü-ˈme-sᵊnt , -tyü- \

Definition of intumescent

of paint
: swelling and charring when exposed to flame

First Known Use of intumescent

1953

in the meaning defined above

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intumescent

adjective in·tu·mes·cent \ -ᵊnt \

medical Definition of intumescent

: marked by intumescence

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