noun: 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
noun: an occurrence of control or strength weakening
Example: "The relaxation of requirements"
noun: (physics) the exponential return of a system to equilibrium after a disturbance
noun: (physiology) the gradual lengthening of inactive muscle or muscle fibers
noun: a state of refreshing tranquility
noun: the act of making less strict
noun: freedom from activity (work or strain or responsibility)