ἀφ-ορίζω,
[in LXX (Cremer, 805 f.) for בּדל hi., סגר hi., נוף hi., רום hi etc.;]
(a) to mark off by boundaries from, separate from: c. acc., Ac 19:9, Ga 2:12; id. seq. ἐκ (ἀπό), Mt 13:4925:32 (MM, s.v.); of excommunication, Lk 6:22. Pass., absol., II Co 6:17;
(b) to set apart, devote to a special purpose (seq. εἰς): c. acc., Ga 1:15. Mid., Ac 13:2, Ro 1:1 (DB, iii 588).†