candela Hear it!

candela definition

can·dela (kan dē′lə, -del′ə)

noun

the basic unit of luminous intensity in the SI system, now defined as the luminous intensity, in a given direction, of a source that emits monochromatic radiation of frequency 540 x 10 hertz and that has a radiant intensity in that direction of watt per steradian: abbrev. cd

Etymology: L, candle: adj. via Sp

adjective

designating a style of cigar with a greenish wrapper

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