Englishfor English speakers
attenuator
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noun
an electrical device for attenuating the strength of an electrical signal
grating
—
noun
(= grate)
a barrier that has parallel or crossed bars blocking a passage but admitting air
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adjective
(= gravelly)
unpleasantly harsh or grating in sound
a gravelly voice
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noun
(= grate)
a frame of iron bars to hold a fire
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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