o·pal (  p l)n. 1. A mineral of hydrated silica. 2. A gemstone made of this mineral, noted for its rich iridescence. [Middle English opalus, from Latin, alteration of Greek opallios, probably from Sanskrit upala  , from variant of upara-, lower, from upa, below; see upo in Indo-European roots.]o pal·ine (p-l n, -l n) adj. |
opaline [ˈəʊpəˌlaɪn]
adj
opalescent
n
an opaque or semiopaque whitish glass
ThesaurusLegend: Synonyms Related Words Antonyms
| Adj. | 1. | opaline - 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" bright - emitting or reflecting light readily or in large amounts; "the sun was bright and hot"; "a bright sunlit room" |
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