Medical Dictionary
grating
noun grat·ing \ˈgrāt-iŋ\
Medical Definition of GRATING
: a system of close equidistant and parallel lines or bars ruled on a polished surface to produce spectra by diffraction—called also diffraction grating
Seen & Heard
What made you want to look up grating? Please tell us where you read or heard it (including the quote, if possible).