ଅର୍ଥ : A barrier that has parallel or crossed bars blocking a passage but admitting air.
ସମକକ୍ଷ : grate
ଅର୍ଥ : A frame of iron bars to hold a fire.
ସମକକ୍ଷ : grate
ଅର୍ଥ : 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.
ସମକକ୍ଷ : diffraction grating