What does HID stand for in lighting terminology?

HID in lighting terminology stands for High Intensity Discharge. This term refers to a type of lighting technology that produces light by creating an electric arc between two electrodes in a gas-filled chamber. The intense light emitted is a result of the ionization of the gas within, which typically includes a mix of noble gases and metal halides.

High Intensity Discharge lamps are known for their high luminous efficacy and are commonly used in applications that require bright and efficient lighting, such as street lighting, sports arenas, and large indoor spaces. Their ability to deliver a substantial amount of light relative to their power consumption makes them a popular choice in various commercial and industrial settings.

The other options do not accurately describe HID technology. High intensity design and high impact discharge are not recognized terms within the lighting community. High illumination discharge, while descriptive, does not reflect the technical definition or application of HID technology.