n.
a brilliant deep blue pigment originally obtained from lapis lazuli, and now made from powdered fired clay, sodium carbonate, sulphur, and resin.
adj.
archaic situated beyond the sea.
Etymology
C16 (as adj.): from med. L. ultramarinus ‘beyond the sea’; the name of the pigment is from obs. Ital. (azzurro) oltramarino, lit. ‘(azure) from overseas’ (because the lapis lazuli was imported).