Noun
luminous intensity measured in candelas
Source: WordNetThe F4Us often operated with the help of C-47 'flare ships' which dropped hundreds of 1,000,000 candlepower magnesium flares to illuminate the targets. Source: Internet
One candlepower was the light produced by a pure spermaceti candle weighing one sixth of a pound and burning at a rate of 120 grains per hour. Source: Internet
One of the best-known of these was the English standard of candlepower. Source: Internet