of or like opal
Origin of opalineopal + -ine
- 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.
- (mineralogy) any of several minerals resembling opal