Noun | 1. | luminous intensity unit - a measure of luminous intensity light unit - a measure of the visible electromagnetic radiation candela, standard candle, candle, cd - the basic unit of luminous intensity adopted under the Systeme International d'Unites; equal to 1/60 of the luminous intensity per square centimeter of a black body radiating at the temperature of 2,046 degrees Kelvin international candle - a former international unit of luminous intensity; now replaced by the candela |