deformation
[C/U] Both
pl: deformations
This term carries a clinical, technical weight, typically appearing in engineering, geology, or physics. It suggests a structural failure or a permanent alteration of a form, rather than a temporary bend. The feeling is one of distortion and loss of original integrity. In a medical or biological context, it refers to a physical abnormality or a congenital misshapenness. Here, the connotation shifts from mechanical stress to a systemic or developmental error, often implying a permanent deviation from a healthy anatomical norm.
Countable when referring to specific instances of distorted shapes, such as a deformation in a car door. Uncountable when discussing the general physical phenomenon of material stress.