Exact Match:
            
                - refraction
- the change in direction of a propagating wave (light or sound) when passing from one medium to another
 
            
			Synonyms:
            
																- atmospheric attenuation,
- blind spots,
- clutter,
- deflection,
- deflexure,
- diffraction,
- diffusion,
- dispersion,
- distortion,
- false echoes,
- flection,
- flexure,
- ground clutter,
- scatter,
- sea clutter,
- skewness,
- superrefraction,
- torsion