grating

معنی کلمه grating

معنی واژه grating

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p. pr. &. vb. n. - of Grate
n. - A partition, covering, or frame of parallel or cross bars; a latticework resembling a window grate; as, the grating of a prison or convent.
n. - A system of close equidistant and parallel lines lines or bars, especially 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.
a. - That grates; making a harsh sound; harsh.
n. - A harsh sound caused by attrition.
n. - A system of close equidistant parallel lines or bars, esp. lines ruled on a polished surface, used for producing spectra by diffraction. Gratings have been made with over 40,000 such lines to the inch, but those with a somewhat smaller number give the best definition.