any rock-forming mineral that has a specific gravity of less than 2.8 and is generally light in color.
noun, Chemistry. 1. See under . noun 1. a colorless, oily, almost tasteless, water-insoluble liquid, usually of either a standard light density (light mineral oil) or a standard heavy density (heavy mineral oil) consisting of mixtures of hydrocarbons obtained from petroleum by distillation: used chiefly as a lubricant, in the manufacture of cosmetics, and in […]
- Light music
noun 1. music for popular entertainment
[lahyt-nis] /ˈlaɪt nɪs/ noun 1. the state or quality of being in weight: the amazing lightness of the new metal. 2. the quality of being agile, nimble, or graceful. 3. lack of pressure or burdensomeness. 4. lack of seriousness; levity in actions, thoughts, or speech: That kind of lightness seemed out of place. 5. gaiety […]
[lahyt-ning] /ˈlaɪt nɪŋ/ noun 1. a brilliant electric spark discharge in the atmosphere, occurring within a thundercloud, between clouds, or between a cloud and the ground. verb (used without object), lightninged, lightning. 2. to emit a flash or flashes of lightning (often used impersonally with it as subject): If it starts to lightning, we’d better […]