| stress, mechanical | A purely physical condition which exists within any material because of strain or deformation by external forces or by non-uniform thermal expansion; expressed quantitatively in units of force per unit area. (12 Dec 1998) |
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| stress, psychological | Stress wherein emotional factors predominate. (12 Dec 1998) |
| stress-bearing area | Surfaces of structures that resist forces, strains, or pressures brought upon them during function. (05 Mar 2000) |
| stress-strain curve | A curve showing the ratio of deformation to load during the testing of a material in tension. (05 Mar 2000) |
| yield stress | The critical stress that must be applied to a material before it begins to flow, as in a Bingham plastic. (05 Mar 2000) |
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| urinary incontinence, stress | The involuntary discharge of urine as a result of anatomic displacement which exerts an opening pull on the bladder orifice. It often occurs during coughing or other forceful stresses. (12 Dec 1998) |
| fractures, stress | Fractures due to the strain caused by repetitive exercise. They are thought to arise from a combination of muscle fatigue and bone failure, and occur in situations where bone remodeling predominates over repair. The classical stress fracture is the march fracture of military personnel, in which the metatarsal undergoes repeated stress during marching. The most common sites of stress fractures are the metatarsus, fibula, tibia, and femoral neck. (12 Dec 1998) |
| life stress | Events or experiences that produce severe strain, e.g., failure on the job, marital separation, loss of a love object. (05 Mar 2000) |