from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A grill or network of bars set in a window or door or used as a partition; a grate.
  • noun A diffraction grating.

from The Century Dictionary.

  • noun The act of rubbing harshly; the harsh sound caused by the rasping or scraping of hard, rough bodies; the feeling produced by harsh attrition.
  • Harsh; rasping; fretting; irritating: as, grating sounds; a grating temper.
  • noun A partition or frame of parallel or crossing bars; an open latticework of wood or metal serving as a cover or guard, but admitting light, air, etc., as in the fair-weather hatches of a ship, the cover of the mouth of a drain or sewer, etc.
  • noun In optics: An arrangement of parallel wires in a plane, designed to produce spectra by diffraction: specifically called a real grating.
  • noun A series of fine parallel lines on a surface of glass or polished metal ruled very close together, at the rate of 10,000 to 20,000, or even 40,000, to the inch: distinctively called a diffraction or diffractive grating.
  • noun A timber framework consisting of beams which cross one another at right angles to support the foundation of a heavy building in light, loose soil.
  • noun In metallurgy, the act of separating large from small ore. See grate, n.

from the GNU version of the Collaborative International Dictionary of English.

  • adjective That grates; making a harsh sound; harsh.
  • noun A harsh sound caused by attrition.
  • noun A partition, covering, or frame of parallel or cross bars; a latticework resembling a window grate.
  • noun (Optics) A system of close equidistant parallel lines or bars, esp. lines ruled on a polished surface, used for producing spectra by diffraction; -- called also diffraction grating.
  • noun (Naut.) The strong wooden lattice used to cover a hatch, admitting light and air; also, a movable Lattice used for the flooring of boats.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective harsh and unpleasant
  • noun A barrier that has parallel or crossed bars blocking a passage but admitting air.
  • noun A frame of iron bars to hold a fire
  • verb Present participle of grate.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adjective unpleasantly harsh or grating in sound
  • noun optical device consisting of a surface with many parallel grooves in it; disperses a beam of light (or other electromagnetic radiation) into its wavelengths to produce its spectrum
  • noun a frame of iron bars to hold a fire
  • noun a barrier that has parallel or crossed bars blocking a passage but admitting air


Sorry, no etymologies found.


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