| LU | light not due to incandescence |
|---|---|
| LU | emitting light not caused by heat |
| LU | the quality of being luminous |
| LU | softly bright or radiant |
| LU | the energy associated with visible light |
| LU | the rate of flow of light energy |
| LU | a measure of luminous flux per unit area |
| LU | a measure of luminous intensity |
| LU | the quality of being luminous |
| LU | an awkward stupid person |
| LU | a compact mass |
| LU | a large piece of something without definite shape |