| lumina | Plural of lumen. Origin: L. (05 Mar 2000) |
|---|---|
| luminal | Relating to the lumen of a blood vessel or other tubular structure. (05 Mar 2000) |
| luminance | The brightness of an object, expressed as the luminous flux per unit solid angle per unit projected area, measured in lamberts or in candelas per square meter. Origin: L. Lumino, to light up, fr. Lumen, light (05 Mar 2000) |