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
English: diffraction grating, grating
gratingEnglish
grating, grate, diffraction grating, gravelly, rasping
Noun
A frame of iron bars to hold a fire
English: grate, grating
A barrier that has parallel or crossed bars blocking a passage but admitting air
English: grate, grating
Adjective
Unpleasantly harsh or grating in sound
English: grating, gravelly, rasping, raspy, rough, scratchy