[{"Bold_text": "noun", "List Items": ["the centimeter-gram-second unit of luminance or brightness, equivalent to 0.32 candles per square centimeter, and equal to the brightness of a perfectly diffusing surface emitting or reflecting one lumen per square centimeter.:L"]}, {"Bold_text": "noun", "List Items": ["Con·stant[kon, -st, uh, nt],1905–51,English composer and conductor.", "Jo·hann Hein·rich[yoh, -hahn , hahyn, -, r, i, kh],1728–77,German scientist and mathematician.", "a male given name: from Germanic words meaning “land” and “bright.”"]}]