Clipping
From The Glossary of Digital Photography
The loss of highlight or shadow detail in an image. The highlights are lost when the image is too bright and suffers from over-saturation, causing increasingly more tones to move into the pure white and leaving no separation between light-colored tones that are near each other in value. The same phenomenon occurs at the lower end of the scale. When there is too little light, all of the darker tones are pushed together, leaving no detail. This can readily be seen in a histogram, either on the camera or in Photoshop. See also blown out
