Century Dictionary and Cyclopedia
- n. A blue pigment, consisting of stannate of protoxid of cobalt, mixed with stannic acid and sulphate of lime. Ure, Dict. Also spelled cæruleum.
GNU Webster's 1913
- n. A greenish blue pigment prepared in various ways, consisting essentially of cobalt stannate. Unlike other cobalt blues, it does not change color by gaslight.
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