Longman Dictionary of Contemporary English homepage

Date: 1600-1700
Language: Latin
Origin: caeruleus 'dark blue', probably from caelum; CELESTIAL

cerulean

 noun
     
Related topics: Colours
ce‧ru‧le‧an also cerulean blue [uncountable] literary
CC a deep blue colour like a clear sky
—cerulean adjective
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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