Stress

The internal resistance of an object to external forces attempting to strain or deform that object. Measured in pounds per square foot or pounds per square inch (psi).

Aviation Maintenance Technician Handbook — General, p. G-10

Also defined in 3 more sources

A force set up within an object that tries to prevent an outside force from changing its shape.

Aviation Maintenance Technician Handbook — Airframe, p. G-34

A force within an object that tries to prevent an outside force from changing its shape.

Aviation Maintenance Technician Handbook — Powerplant, p. G-26

The body’s response to demands placed upon it.

Pilot's Handbook of Aeronautical Knowledge, p. G-29

Taught in PP-M Concepts, GEN-G Procedures, GEN-L Quick reference, PP-B Concepts, PP-M Procedures, AF-B Concepts and 9 more.