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noun, Medicine/Medical.
therapeutic exposure to full-spectrum artificial light that simulates sunlight, used to treat various conditions, as seasonal affective disorder.


Read Also:

  • Lighttight

    [lahyt-tahyt] /ˈlaɪtˌtaɪt/ adjective, Chiefly British. 1. .

  • Light trap

    noun 1. 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.

  • Light-valve

    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.

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