noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   a surface having many closely spaced lines or slits; used to produce optical spectra by mutual interference
2. 2
   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 wordnet

Synonyms

All synonyms

gratinggratings