Definition of porcelainize in US English:

porcelainize

(also porcelainise)

verb

  • 1with object To transform into (a substance resembling) porcelain; to give a hard glazed finish to. Also without object: to acquire a hard glazed finish. rare.

  • 2with object Chiefly US. To coat with porcelain enamel or a similar vitreous coating.

Origin

Mid 19th century; earliest use found in Andrew Crombie Ramsay (1814–1891), geologist. From porcelain + -ize.