light·ness 1 
(lītnĭs)
(lītnĭs)n.
1. The quality or condition of being illuminated.
2. The dimension of the color of an object by which the object appears to reflect or transmit more or less of the incident light, varying from black to white for surface colors and from black to colorless for transparent volume colors.
- legibleness
- legibly
- legion
- legionary
- legionary ant
- legionnaire
- Legionnaires' disease
- Legion of Honor
- Legion of Merit
- legislate
- legislation
- legislative
- legislatively
- legislator
- legislatorial
- legislatorship
- legislature
- legist
- legit
- legitimacy
- legitimate
- legitimately
- legitimateness
- legitimation
- legitimatize