relaxation in WordNet English dictionary

1. freedom from activity (work or strain or responsibility)
   "took his repose by the swimming pool"
   rest  ease  repose  relaxation 
   
2. a feeling of refreshing tranquility and an absence of tension or worry
   "the easiness we feel when sleeping"
   easiness  relaxation 
   
3. the act of making less strict
   liberalization  liberalisation  relaxation 
   
4. an occurrence of control or strength weakening
   "the relaxation of requirements"; "the loosening of his grip"; "the slackening of the wind"
   relaxation  loosening  slackening 
   
5. 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
   relaxation  relaxation method 
   
6. (physics) the exponential return of a system to equilibrium after a disturbance
   relaxation  relaxation behavior 
   
7. (physiology) the gradual lengthening of inactive muscle or muscle fibers
   relaxation