NACREOUS
iridescent, nacreous, opalescent, opaline, pearlescent
(adjective) 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”
nacreous
(adjective) consisting of or resembling mother-of-pearl
Source: WordNet® 3.1
Etymology
Adjective
nacreous (comparative more nacreous, superlative most nacreous)
Of, or resembling nacre (mother of pearl).
Exhibiting lustrous or rainbow-like colors.
Anagrams
• Crusoean, carneous
Source: Wiktionary
Na"cre*ous, a. Etym: [See Nacre.] (Zoöl.)
Definition: Consisting of, or resembling, nacre; pearly.
Source: Webster’s Unabridged Dictionary 1913 Edition