appointorLaw.|əˌpɔɪnˈtɔːr|[repr.actual or possibleME.andAFr.appointour:—OF.apointeor: see appoint and -or.]The form of appointer used in a specific legal sense: The person who exercises a power of appointment.1882JesselLawRep.Ch.Div.XXI. 336The parties to this deed intended that the appointor..should be the judge of the period at which the portions should vest.