• (a.) Damaged by accidental exposure to light; light-fogged; -- said of plates or films.
A tasting term for a wine that has had long exposure to Ultraviolet light causing 'wet cardboard' type aroma and flavour. metric measure of volume equal to 33.8 fluid ounces (U.S.) or 35.2 fl oz (imperial).
Light'·struck` adjective (Photog.) Damaged by accidental exposure to light; light-fogged; -- said of plates or films. 
Beer damaged by exposure to light. Also known as corona