| Noun | 1. | lightness - the property of being comparatively small in weight; "the lightness of balsa wood"weight - the vertical force exerted by a mass as a result of gravity heaviness, weightiness - the property of being comparatively great in weight; "the heaviness of lead" | |
| 2. | lightness - the gracefulness of a person or animal that is quick and nimble | |
| 3. | lightness - having a light colorvalue - relative darkness or lightness of a color; "I establish the colors and principal values by organizing the painting into three values--dark, medium...and light"-Joe Hing Lowe darkness - having a dark or somber color | |
| 4. | lightness - the visual effect of illumination on objects or scenes as created in pictures; "he could paint the lightest light and the darkest dark"brightness - the location of a visual perception along the black-to-white continuum | |