opaline
adjective
1. having a play of lustrous rainbow colors
- a milky opalescent (or opaline) luster
Similar word(s): bright, iridescent, nacreous, opalescent, pearlescent
noun
1. a clear-to-white liquid secreted by sea hares (genus Aplysia) that becomes viscous upon contact with water
- The attack on a sea hare by a spiny lobster causes release of the whitish opaline, followed the co-release of both opaline and ink.
2. (mineralogy) any of several minerals resembling opal, including a variety of yellow chalcedony
3. opal glass