CeruleumCe*ru"le*um\, n. [NL.] A greenish blue pigment prepared in various ways, consisting essentially of cobalt stannate. Unlike other cobalt blues, it does not change color by gaslight.
|an extraordinary or unusual thing, person, or event; an exceptional example or instance.|
|an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.|
Dictionary.com presents 366 FAQs, incorporating some of the frequently asked questions from the past with newer queries.