ceruleanPronunciation: /sɪˈruːlɪən/ literaryDefinition of cerulean adjective deep blue in colour like a clear sky:images of cerulean waters and golden sands noun [mass noun] a deep sky-blue colour: the background was painted in cerulean blueOrigin: mid 17th century: from Latin caeruleus 'sky blue', from caelum 'sky'cerulean in other Oxford dictionaries Definition of cerulean in the US English dictionary
