What is "paroikoi"

Paroikoi (plural of Greek πάροικος, paroikos, the etymological origin of parish and parochial) is the term that replaced " metic" in the Hellenistic and Roman period to designate foreign residents. In Asia Minor they were named katoikoi. In the Byzantine Empire, paroikoi were non-proprietary peasants, hereditary holders of their land, irremovable as long as they paid their rent. They appeared in the Justinian code, which prohibited this status; so it remained provisionally clandestine.