- (a.) Situated or being beyond the sea.
- (n.) A blue pigment formerly obtained by powdering lapis lazuli, but now produced in large quantities by fusing together silica, alumina, soda, and sulphur, thus forming a glass, colored blue by the sodium polysulphides made in the fusion. Also used adjectively.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). ultramarine. Retrieved September 29, 2026, from http://smartdefine.org/ultramarine/definitions/2076082 |
| Chicago | Webster's. 2011. "ultramarine" http://smartdefine.org/ultramarine/definitions/2076082 (accessed September 29, 2026). |
| Harvard | Webster's 2011, ultramarine, Smart Define, viewed 29 September, 2026, <http://smartdefine.org/ultramarine/definitions/2076082>. |
| MLA | Webster's. "ultramarine" 28 May 2011. Web. 29 September 2026. <http://smartdefine.org/ultramarine/definitions/2076082> |