We have put together a list of words that are similar to NACREOUS.

6 Alternative Words Similar to nacreous

1 Iridescent Adjective      Synonym Words Like Iridescent
2 Opalescent Adjective      Synonym Words Like Opalescent
3 Opaline Adjective      Synonym Words Like Opaline
4 Pearlescent Adjective      Synonym Words Like Pearlescent
5 Shell Adjective      Related Words Like Shell
6 Bright Adjective      Similar Words Like Bright

2 examples of nacreous

1 a milky opalescent (or opaline) luster
2 nacreous (or pearlescent) clouds looking like mother-of-pearl

8 definitions of nacreous

1 Consisting of, or resembling, nacre; pearly.
2 consisting of or resembling mother-of-pearl
3 having a play of lustrous rainbow colors
4 Consisting of, resembling, or pertaining to nacre or mother-of-pearl: as, a nacreous luster; a nacreous layer.
5 Producing or possessing nacre, as shells which have a certain luster or lustrous layer on their inner surface.
6 In bacteriology, applied to colonies which are of a translucent, grayish-white color with a pearly luster.
7 Of, or resembling nacre (mother of pearl).
8 Exhibiting lustrous or rainbow-like colors.
We get our data from many different dictionaries across the web:
Wordnik, Wiktionary, Century, American Heritage, Gcide