Definition of diffraction grating Diffraction grating

dif•frac•tion grat•ing

We found 2 definitions of diffraction grating from 2 different sources.

What does diffraction grating mean?

Noun
diffraction grating - 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
		grating
		optical device a device for producing or controlling light

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diffraction grating (Noun)
A surface having a large number of closely spaced lines or slits; used to produce optical spectra by mutual interference.