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In`tu*mesce" (?), v. i. [imp. & p. p. Intumesced (?); p. pr. & vb. n. Intumescing (?).] [L. intumescere; pref. in- in + tumescere to swell up, incho. fr. tumere to swell. See Tumid.]

To enlarge or expand with heat; to swell; specifically, to swell up or bubble up under the action of heat, as before the blowpipe.

In a higher heat, it intumesces, and melts into a yellowish black mass. Kirwan.


© Webster 1913.

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