re·la·tor \rə̇ˈlād.ə(r)\noun (-s) Etymology: Latin, from relatus (suppletive past participle of referre to carry back, refer, relate) + -or — more at relate 1.: one that relates : relater, narrator < relator of folk tales > 2.: a private person at whose relation or in whose behalf an information in the nature of a quo warranto or mandamus is filed