D defs.my
Entry 1 sense Webster, 1913

Ceruleum

· Ce·ru·le·um · IPA
01 n. A greenish blue pigment prepared in various ways, consisting essentially of cobalt stannate. Unlike other cobalt blues, it does not change …
  1. 1.
    A greenish blue pigment prepared in various ways, consisting essentially of cobalt stannate. Unlike other cobalt blues, it does not change color by gaslight.