noun
- the base unit of luminous intensity in the International System of Units
Usage: scientific; physics
Examples
- The candela is defined by the luminous intensity of a light source.
- Scientists measure brightness using the candela as the standard unit.
- One candela equals the luminous intensity of a typical candle.
- The LED’s output was measured at 50 candelas.
- Photometric calculations require values expressed in candelas.
- The candela replaced the old candle as the official unit in 1979.