Main Entry: ¹ul·tra·ma·rine

Pronunciation: \-mə-ˈrēn\

Function: noun

Etymology: Medieval Latin ultramarinus coming from beyond the sea, from Latin ultra- + mare sea — more at marine

Date: 1598

1 a (1) : a blue pigment prepared by powdering lapis lazuli (2) : a similar pigment prepared from kaolin, soda ash, sulfur, and charcoal b : any of several related pigments
2 : a vivid blue