1 an official responsible for keeping a register or official records.
2 the chief administrative officer in a university.
3 a middle-ranking hospital doctor undergoing training as a specialist.
4 (in the UK) the judicial and administrative officer of the High Court etc.
Registrar General a government official responsible for holding a population census.
med.L registrarius f. registrum REGISTER
CA, CPA, accountant, accountant general, actuary, amanuensis, archivist, auditor, bank accountant, bank examiner, bookkeeper, calculator, certified public accountant, chartered accountant, clerk, comptroller, controller, cost accountant, cost keeper, documentalist, engraver, filing clerk, journalizer, librarian, marker, notary, notary public, prothonotary, reckoner, record clerk, recorder, recordist, register, scorekeeper, scorer, scribe, scrivener, secretary, stenographer, stonecutter, timekeeper
recorder, notary, clerk, registrar
, registrary, register, prothonotary, amanuensis, secretary, scribe, babu, remembrancer, bookkeeper, custos rotulorum, Master of the Rolls, annalist, historian, historiographer, chronicler, journalist, biographer, antiquary, memorialist, interviewer.