porcelainize
/ˈpɔːsɪlənʌɪz/ /ˈpɔːs(ə)leɪnʌɪz/(also porcelainise)
verb
1 [with 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.
2 [with 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.