Origin of trofferaltered from trough + -er
The definition of a troffer is a long recessed light fixture, especially on in the ceiling or for a fluorescent light.
An example of a troffer is a fluorescent light fixture recessed in the ceiling.
a ceiling recess like an inverted trough with its bottom next to the ceiling: used esp. to enclose fluorescent lamps
An inverted, usually metal trough suspended from a ceiling as a fixture for fluorescent lighting tubes.
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.