| DIF | a protozoan with an ovoid shell of cemented sand grains |
|---|---|
| DIF | undergo diffraction |
| DIF | when light passes sharp edges or goes through narrow slits the rays are deflected and produce fringes of light and dark bands |
| DIF | optical device consisting of a surface with many parallel grooves in it |
| DIF | cause to become widely known |
| DIF | spread or diffuse through |
| DIF | move outward |
| DIF | spread out |
| DIF | lacking conciseness |
| DIF | a cluster of stars within an intricate cloud of gas and dust |
| DIF | (of light rays) subjected to scattering by reflection from a rough surface or transmission through a translucent material |
| DIF | (of light) not bright or glaring |