from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A grill or network of bars set in a window or door or used as a partition; a grate.
- n. A diffraction grating.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. harsh and unpleasant
- n. A barrier that has parallel or crossed bars blocking a passage but admitting air.
- n. A frame of iron bars to hold a fire
- v. Present participle of grate.
from the GNU version of the Collaborative International Dictionary of English
- n. A partition, covering, or frame of parallel or cross bars; a latticework resembling a window grate.
- n. 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.
- n. The strong wooden lattice used to cover a hatch, admitting light and air; also, a movable Lattice used for the flooring of boats.
- adj. That grates; making a harsh sound; harsh.
- n. A harsh sound caused by attrition.
from The Century Dictionary and Cyclopedia
- n. 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.
- n. 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.
- n. In optics: An arrangement of parallel wires in a plane, designed to produce spectra by diffraction: specifically called a real grating.
- n. 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.
- n. 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.
- n. In metallurgy, the act of separating large from small ore. See grate, n.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. unpleasantly harsh or grating in sound
- n. 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
- n. a frame of iron bars to hold a fire
- n. a barrier that has parallel or crossed bars blocking a passage but admitting air
Sorry, no etymologies found.