The Collaborative International Dictionary
Iridize
Iridize \Ir"i*dize\, v. t. [imp. & p. p. Iridized; p. pr. & vb. n. Iridizing.]
To point or tip with iridium, as a gold pen.
To make iridescent; as, to iridize glass.
Wiktionary
iridize
vb. 1 (context transitive English) To point or tip with iridium. 2 (context transitive English) To make iridescent.