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1) A material or device that diffuses radiation, whether it is light, sound or heat. Heating and air conditioning vents may place a diffuser unit at duct outlets to direct and disperse air evenly. Photographic lights may have a diffuser placed over the bulb to scatter and soften the illumination.
2) A device placed on a nozzle to slow and disperse a pressurized stream of gas or liquid.
Synonyms and Related Terms
Strahler (Deut.); diffuseur (Fr.);
Resources and Citations
- Dictionary of Building Preservation, Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996
- The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998