| 1. | to mar the natural form or shape of; put out of shape; disfigure: In cases where the drug was taken during pregnancy, its effects deformed the infants. |
| 2. | to make ugly, ungraceful, or displeasing; mar the beauty of; spoil: The trees had been completely deformed by the force of the wind. |
| 3. | to change the form of; transform. |
| 4. | Geology, Mechanics. to subject to deformation: The metal was deformed under stress. |
| 5. | to undergo deformation. |