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Word | Lumen |
a unit of luminous flux equal to the amount of light given out through a solid angle of 1 steradian by a point source of 1 candela intensity radiating uniformly in all directions / a cavity or passage in a tubular organ / unit of light energy (one candle's worth) / the cavity of a tubular organ or part the lumen of a blood vessel / the bore of a tube (as of a hollow needle or catheter) / a unit of luminous flux equal to the light emitted in a unit solid angle by a uniform point source of one candle intensity / : the cavity of a tubular organ or part the lumen of a blood vessel / : the bore of a tube (as of a hollow needle or catheter) / : a unit of luminous flux equal to the light emitted in a steradian by a uniform point source of one candle intensity, | |
Usage | ⇒ In buying light bulbs, she checked not only their power, as measured in watts, but their brightness, as measured in lumens. |
Synonyms | unit of light, lm, bougie decimale, candle, candle-foot, candle-hour, candle-meter, candle lumen, candle power, central canal, decimal candle, exposure meter, flux, foot-candle, intensity, international candle, lamp-hour, light, light meter, light quantum, |
Antonyms | |
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