- (a.) Of or pertaining to the spectrum; made by the spectrum; as, spectral colors; spectral analysis.
- (a.) Of or pertaining to a specter; ghosty.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). spectral. Retrieved September 20, 2026, from http://smartdefine.org/spectral/definitions/2064597 |
| Chicago | Webster's. 2011. "spectral" http://smartdefine.org/spectral/definitions/2064597 (accessed September 20, 2026). |
| Harvard | Webster's 2011, spectral, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/spectral/definitions/2064597>. |
| MLA | Webster's. "spectral" 28 May 2011. Web. 20 September 2026. <http://smartdefine.org/spectral/definitions/2064597> |