An example of a troffer is a fluorescent light fixture recessed in the ceiling.
Origin of trofferaltered from trough + -er
Origin of trofferAlteration of trough
- A rectangular, trough-shaped light fixture, typically for mounting in or on a ceiling to light the area below, and usually containing two or three fluorescent bulbs.
- Each fluorescent troffer in the room contained three lamps and two ballasts.