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cyaneous

[sahy-an-ee-uh s]
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adjective
  1. deep blue; cerulean.

Origin of cyaneous

1680–90; < Latin cyaneus < Greek kyáneos. See cyan-1, -eous
Related formssub·cy·an·e·ous, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018