iːz iz ˌɹilækˈseɪʃən ɹɪˈpoʊz ɹɪˈpəʊz ɹɛst 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) took his repose by the swimming pool an occurrence of control or strength weakening the relaxation of requirements the loosening of his grip the slackening of the wind a feeling of refreshing tranquility and an absence of tension or worry the easiness we feel when sleeping (physics) the exponential return of a system to equilibrium after a disturbance (physiology) the gradual lengthening of inactive muscle or muscle fibers