any mechanical arrangement that allows some form of movement to take place while excluding light, such as a light-proof door or the lips of a film cassette
- Light treatment
light treatment n. See phototherapy.
noun, Electricity. 1. a light-transmitting device having transmissions that vary in accordance with an electric input, as voltage, current, or an electron beam, used chiefly for recording sound on motion-picture film.
noun 1. verse that is written to entertain, amuse, or please, often by the subtlety of its form rather than by its literary quality.
noun 1. ordinary water, as opposed to heavy water; water containing the normal proportion of deuterium oxide. noun 1. a name for water (H2O), as distinct from heavy water light water Ordinary water, H2O. Compare heavy water.