cyan|ˈsaɪən| = cyan-blue. 1889in Cent.Dict.1957R. W. G. Hunt Reprod. Colour iv. 37 The colours of the dyes used are cyan, magenta, and yellow.1964Observer 22 Nov. 23/1 Pinkish lights would make the picture greenish-blue or cyan, the engineers' word for sickly green.