- (n.) The state, condition or quality, of being light or not heavy; buoyancy; levity; fickleness; nimbleness; delicacy; grace.
- (n.) Illumination or degree of illumination; as, the lightness of a room.
- (n.) Absence of depth or of duskiness in color; as, the lightness of a tint; lightness of complexion.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). lightness. Retrieved September 20, 2026, from http://smartdefine.org/lightness/definitions/2027874 |
| Chicago | Webster's. 2011. "lightness" http://smartdefine.org/lightness/definitions/2027874 (accessed September 20, 2026). |
| Harvard | Webster's 2011, lightness, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/lightness/definitions/2027874>. |
| MLA | Webster's. "lightness" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/lightness/definitions/2027874> |