relaxation

the act of making less strict

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

freedom from activity (work or strain or responsibility)

an occurrence of control or strength weakening

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

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

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