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