from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. An inverted, usually metal trough suspended from a ceiling as a fixture for fluorescent lighting tubes.


from The American Heritage® Dictionary of the English Language, 4th Edition

Alteration of trough.


  • The XRT22 LED recessed troffer is designed to replace less-efficient fluorescent fixtures indoors.

  • This is the first interior troffer that we have offered to the petroleum market, and it is a product that our customers have been requesting.

  • This product, combined with the new area light and interior troffer, solidifies our position as a leading supplier of premium lighting solutions for the petroleum market.

  • Finally I am excited about our new interior troffer light.

  • 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.

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  • An inverted recess on the ceiling that serves as support and a reflector for flourescent light

    December 5, 2007