Troffer Definition
trŏfər, trôfər
noun
A ceiling recess like an inverted trough with its bottom next to the ceiling: used esp. to enclose fluorescent lamps.
Webster's New World
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.
Wiktionary
Origin of Troffer
Alteration of trough
From American Heritage Dictionary of the English Language, 5th Edition
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