| luminaire | (noun) an electrical device used to create artificial light by use of an electric lamp; all light fixtures have a fixture body and a light socket to hold the lamp and allow for its replacement | Synonyms: light fitting, light fixture |
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| luminance | (noun) the quality of being luminous; emitting or reflecting light | Synonyms: brightness, brightness level, light, luminosity, luminousness |
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| luminary | (noun) a celebrity who is an inspiration to others | Synonyms: guiding light, leading light, notability, notable |
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| luminescence | (noun) light from nonthermal sources | Synonyms: glow |
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| (noun) light not due to incandescence; occurs at low temperatures | - |
| luminism | (noun) an artistic movement in the United States that was derived from the Hudson River school; active from 1850 to 1870; painted realistic landscapes in a style that pictured atmospheric light and the use of aerial perspective | - |
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| luminosity | (noun) the quality of being luminous; emitting or reflecting light | Synonyms: brightness, brightness level, light, luminance, luminousness |
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| luminousness | (noun) the quality of being luminous; emitting or reflecting light | Synonyms: brightness, brightness level, light, luminance, luminosity |
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