‖ ceruleum, cæ-
(sɪˈruːliːəm)
[neut. of L. cæruleus.]
(See quots.)
| 1859 Times 28 Dec. 2/2 (Advt.) Cæruleum, a new permanent colour, prepared for the use of artists. 1875 Ure Dict. Arts. I. 570 Cæruleum..consisting of stannate of protoxide of cobalt, mixed with stannic acid and sulphate of lime. |