Define the term "luminaire."

The term "luminaire" refers to a complete lighting unit that encompasses not only the light source but also the components that contain and distribute the light. This includes fixtures that may have reflectors, lenses, and housing, which are essential for directing light effectively in a desired manner. The definition signifies that a luminaire is more than just the bulb or light source; it is an assembly designed to manage light output and integrate with other elements of a lighting system.

In the context of lighting design and applications, understanding that a luminaire includes both the source and its housing is crucial for selecting the appropriate lighting solutions for various environments. This knowledge helps designers and lighting professionals ensure that their lighting systems are functional, aesthetically pleasing, and compliant with relevant standards.