Nacreous (Adjective)
Meaning 1
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".
Classification
All adjective clusters.
Synonyms
Meaning 2
Consisting of or resembling mother-of-pearl.
Classification
Relational adjectives (pertainyms).