Nacreous - Definition
nacreous
adj 1: consisting of or resembling mother-of-pearl
2: having a play of lustrous rainbow colors; "an iridescent oil
slick"; "nacreous (or pearlescent) clouds looking like
mother-of-pearl"; "a milky opalescent (or opaline) luster"
[syn: iridescent, nacreous, opalescent, opaline,
pearlescent]