[ adj ] having a play of lustrous rainbow colors <adj.all> an iridescent oil slicknacreous (or pearlescent) clouds looking like mother-of-pearl a milky opalescent (or opaline) luster
Opalescent \O`pal*es"cent\, a. Reflecting a milky or pearly light from the interior; having an opaline play of colors.
Everything shone, whether in crackling brass or with an opalescent gleam, and the conductor paced the opera unerringly.