- (n.) An opaline variety of yellow chalcedony.
- (n.) An opaline color or expanse.
- (n.) Opal glass.
- (a.) Of, pertaining to or like, opal in appearance; having changeable colors like those of the opal.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). opaline. Retrieved September 23, 2026, from http://smartdefine.org/opaline/definitions/2038947 |
| Chicago | Webster's. 2011. "opaline" http://smartdefine.org/opaline/definitions/2038947 (accessed September 23, 2026). |
| Harvard | Webster's 2011, opaline, Smart Define, viewed 23 September, 2026, <http://smartdefine.org/opaline/definitions/2038947>. |
| MLA | Webster's. "opaline" 27 May 2011. Web. 23 September 2026. <http://smartdefine.org/opaline/definitions/2038947> |