11 letters · 13 points in Scrabble
noun blue pigment made of powdered lapis lazuli
noun a vivid blue to purple-blue color
adjective of a brilliant pure blue to purplish blue color
originBorrowed from Medieval Latin ultrāmarīnus, from Latin ultrā (“beyond”) + marīnus (“of or relating to the sea, marine”). By surface analysis, ultra + marine. Noun sense 1 (“pigment”) refers to the fact that lapis lazuli was obtained from foreign countries and hence “beyond the sea”.
Etymology from Wiktionary, CC BY-SA 3.0