Noah Webster
Ultramarine
ULTRAMARINE, adjective [Latin ultra, beyond, and marinus, marine.]
Situated or being beyond the sea.
ULTRAMARINE, noun [supra.]
1. a beautiful and durable sky-blue; a color formed of the mineral called lapis lazuli, and consisting of little else than oxyd of iron.
2. Azure-stone.
ULTRAMARINE ashes, a pigment which is the residuum of lapis lazuli, after the ultramarine has been extracted. Their appearance is that of the ultramarine a little tinged with red, and diluted with white.