RELAXATION

(physiology) the gradual lengthening of inactive muscle or muscle fibers

(physics) the exponential return of a system to equilibrium after a disturbance

A feeling of refreshing tranquility and an absence of tension or worry

Example: "The easiness we feel when sleeping"

An occurrence of control or strength weakening

Example: "The relaxation of requirements"

Freedom from activity (work or strain or responsibility)

Example: "Took his repose by the swimming pool"

A method of solving simultaneous equations by guessing a solution and then reducing the errors that result by successive approximations until all the errors are less than some specified amount

The act of making less strict