Definitions
American Heritage® Dictionary of the English Language, Fourth Edition
- n. An inverted, usually metal trough suspended from a ceiling as a fixture for fluorescent lighting tubes.
Etymologies
- Alteration of trough.
Examples
“The TPS92210 is designed for general lighting applications, such as commercial and residential recessed, troffer, light bulb replacement, architectural and display lighting.”
TI introduces new LED lighting controller with power factor correction - Yahoo! Finance
“˜ Project Manager as Associate Director of Engineering Design with Physical Plant Project Scope: ˜ Retrofit the existing 2'x4 'troffer florescent lighting system for remaining 2000 of offices ˜ Resulting from an initial trial of 1000 SF that removed two of the four bulbs in the fixtures and added a polished concaved reflector made by 3M.”
Lists
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porphyrogenitus An inverted recess on the ceiling that serves as support and a reflector for flourescent light Dec 4, 2007