Link to this page adjective: resembling opal with its iridescence Of, related to, or like, opal to look at; having changeable colors like those of opal. having a play of lustrous rainbow colors View More noun: any one of a number of nutrients resembling opal An opaline variety of yellowish chalcedony. Opal cup. An opaline color or expanse. A semi-translucent cup, whitened by adding phosphate of lime, peroxid of tin, or other components. An opalina. View More others: related to or like opal; also, like some property associated with the opal; especially, having an iridescence like that of opal; bluish-white, reflecting prismatic colors, as the wings of certain insects. Related Sources Definition for "opaline" resembling opal with its iridescence View More Sentence for "opaline" Rhyme for "opaline" Equivalent for "opaline" Same Context for "opaline"