emerit

‖a. [ L., having served out his time, p. p. of emerere, emereri, to obtain by service, serve out one's term; e out + merere, mereri, to merit, earn, serve. ] Honorably discharged from the performance of public duty on account of age, infirmity, or long and faithful services; -- said of an officer of a college or pastor of a church. [ 1913 Webster ]