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luminousness 透光率 透光率 luminousness n 1: the quality of being luminous; emitting or reflecting light; "its luminosity is measured relative to that of our sun" [synonym: {luminosity}, {brightness}, {brightness level}, {luminance}, {luminousness}, {light}] luminousness \lu"mi*nous*ness\ n.
the quality of being luminous; emitting or reflecting light. Syn: luminosity, luminance, light. [WordNet 1.5] Luminous \Lu"mi*nous\, a. [L. luminosus, fr. lumen light: cf. F. lumineux. See {Luminary}, {Illuminate}.] [1913 Webster] 1. Shining; emitting or reflecting light; brilliant; bright; as, the is a luminous body; a luminous color. [1913 Webster] Fire burneth wood, making it . . . luminous. --Bacon. [1913 Webster] The mountains lift . . . their lofty and luminous heads. --Longfellow. [1913 Webster] 2. Illuminated; full of light; bright; as, many candles made the room luminous. [1913 Webster] Up the staircase moved a luminous space in the darkness. --Longfellow. [1913 Webster] 3. Enlightened; intelligent; also, clear; intelligible; as, a luminous mind. " Luminous eloquence." --Macaulay. " A luminous statement." --Brougham. [1913 Webster] {Luminous paint}, a paint made up with some phosphorescent substance, as sulphide of calcium, which after exposure to a strong light is luminous in the dark for a time. [1913 Webster] Syn: Lucid; clear; shining; perspicuous. [1913 Webster] -- {Lu"mi*nous*ly}, adv. -- {Lu"mi*nous*ness}, n. [1913 Webster]
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