X, Y, Z - Glossary of lighting terms

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Xenon
A heavy, colorless, and relatively inert gaseous element that occurs in air as about one part in 20 million by volume and is used especially in thyratrons and specialized flashtubes.

Yard Lighting
Outdoor lighting fixtures, including hanging pendant lamps, wall lights, security lights and landscape lighting used to beautify and enhance an outdoor space.

Zone Lighting
In dimming, lights that are operated toget her. Also called Channel Lighting.