monochromator

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Related to Blazed Grating: diffraction grating, transmission grating

mon·o·chro·ma·tor

(mon'ō-krō'mā-tŏr, -tōr),
A prism or diffraction grating used in spectrophotometry to isolate a narrow spectral range.

monochromator

(mŏn-ō-krō′mā-tor)
A spectroscope modified for selective transmission of a narrow band of the spectrum.

monochromator

A modified spectroscope for producing nearly monochromatic light.