ultraviolet light; UV light
Physics term for ultraviolet radiation; synonymous with 紫外線 (しがいせん), which is more common in everyday contexts.
See also: 紫外線
Ultraviolet light has a shorter wavelength than visible light.
This device detects ultraviolet light.
Compound of 紫外 (しがい, 'ultraviolet') and 光 (こう, 'light').