1. Of a deep somewhat purplish blue colour similar to that of a clear October sky
   "October's cerulean weather";
   - azure, sky-blue, bright blue, cerule [literary]

1. A light shade of blue
   "The cerulean sky was dotted with fluffy white clouds";
   - azure, sapphire, lazuline, sky-blue

Derived forms: ceruleans

See also: chromatic

Type of: blue, blueness

Encyclopedia: Cerulean, Kentucky