Defn: To give forth a play of colors, like the opal.
OPALESCENCE
O`pal*es"cence, n. (Min.)
Defn: A reflection of a milky or pearly light from the interior of a mineral, as in the moonstone; the state or quality of being opalescent.
OPALESCENT
O`pal*es"cent, a.
Defn: Reflecting a milky or pearly light from the interior; having an opaline play of colors.
OPALINE
O"pal*ine, a. Etym: [Cf. F. opalin.]
Defn: Of, pertaining to, or like, opal in appearance; having changeable colors like those of the opal.
OPALIZE
O"pal*ize, v. t. [imp. & p. p. Opalized; p. pr. & vb. n. Opalizing.]
Etym: [Cf. F. opaliser.]
Defn: To convert into opal, or a substance like opal. Lyell.
OPALOTYPE
O*pal"o*type, n. Etym: [Opal + -type.] (Photog.)