[f. as prec. + -ING1.] The action of the verb. Also attrib.
1846. Hancock, Patent Specif., No. 11135. 2. In all the compounds I employ sulphur and heat , which process is now commonly designated vulcanizing.
1855. Goodyear, Gum-elastic (New Haven), 177. Soon after the discovery of the heating or vulcanizing process.
1884. Knight, Dict. Mech., Suppl. 931/2. The heating or vulcanizing is conducted in strong cast-iron cylinders.