opaline adjective & noun. ['ǝʊp(ǝ)lʌɪn, -lɪn] L18.
[from OPAL + -INE¹.]
A. adjective. Resembling opal, esp. in colour or iridescence. L18.
b. noun.
1. A variety of yellow chalcedony which presents an opaline semi-opacity. Now rare. M19.

2. A semi-translucent glass, whitened by the addition of various ingredients (also called milk-glass). Also, translucent glass of a colour other than white. L19.

3. An opaline colour, surface, or expanse. L19.

[TahlilGaran] English Dictionary ▲