[f. as prec. + -ING1.] The action of the verb. Also attrib.

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1846.  Hancock, Patent Specif., No. 11135. 2. In all the compounds … I employ sulphur and heat…, which process is now commonly designated vulcanizing.

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1855.  Goodyear, Gum-elastic (New Haven), 177. Soon after the discovery of the heating or vulcanizing process.

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1884.  Knight, Dict. Mech., Suppl. 931/2. The heating or vulcanizing is conducted in strong cast-iron cylinders.

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