ἔγ-κτησις · eg-ktēsis — LSJ
tenure of land in a country, district, the right of holding such property
tenure of land in a country or district by a person not belonging to it, X. HG 5.2.19 (pl.); the right of holding such property, freq. granted as a privilege or reward to foreigners, ἔγκτασιν γᾶς καὶ οἰκιᾶν Decr.Byz. ap. D. 18.91, cf. IG 5(1).4.12 (Sparta), etc.; εἶναι δὲ αὐτῷ οἰκίας ἔγκτησιν ib. 2(2).53.
2 estate, property, of properties
estate, property, LXX Le. 25.13, etc.; βιβλιοθήκη ἐγκτήσεων register of properties, BGU 76 (ii A. D.), etc.
3 acquisition of territory
acquisition of territory, Plb. 28.20.8 (prob. l.).