Lexical Definition

‎κτάομαι‎ ktáomai (ktah'-om-ahee) to posses ^G:V
a primary verb

obtain, possess, provide, purchase.

• to get, i.e. acquire (by any means
• own)

Abbott-Smith

κτάομαι, -ῶμαι, [in LXX chiefly for קנה;]
in pres., impf., fut. and aor., to procure for oneself, get, gain, acquire (the pf. and plpf., to have acquired, hence to possess, do not occur in NT): c. acc. rei, Mt 10:9, Lk 18:12, Ac 8:20; c. gen. pret., Ac 22:28; ἐκ c. gen. pret., Ac 1:18; τ. ψυχὰς ὑμῶν (MM, xvi), Lk 21:19; τ. ἑαυτοῦ σκεῦος κτᾶσθαι, I Th 4:4 (where if σ. = body, κ. must = pf., κέκτημαι; v. MM, xvi; M, Th., in l.; Field, Notes, 72 f. But σ. is most freq. taken as = wife; v. Thayer, s.v.; Lft., Notes, 53 ff.; ICC, in l.).†

Abbott-Smith References

Liddell-Scott-Jones

κτάομαι,

Ionic dialect κτέομαι, only as variant in [Refs 5th c.BC+]: future κτήσομαι [Refs 7th c.BC+]aorist ἐκτησάμην, Epic dialect κτ-, [Refs 8th c.BC+]: perfect κέκτημαι [Refs 8th c.BC+] in following lines, [Refs]; Ionic dialect 3rd.pers. plural ἐκτέαται [Refs 5th c.BC+]; subjunctive κέκτωμαι [Refs 5th c.BC+] codices: pluperfect ἐκεκτήμην [Refs 5th c.BC+]; Ionic dialect 3rd.pers. plural ἔκτηντο [Refs 5th c.BC+]; Attic dialect 1st pers. plural ἐκτήμεθα falsa lectio in [Refs 5th c.BC+]: for future and aorist passive, see below[Refs]

__I present, imperfect, future, and aorist,
__I.1 procure for oneself, get, acquire, κτήμασι τέρπεσθαι τὰ γέρων ἐκτήσατο Πηλεύς [Refs 8th c.BC+]; [οἰκῆας] Od.[same place]; γῆν [Refs 4th c.BC+]; of horses, win (as a prize), [Refs 5th c.BC+]; κτήσασθαι βίον ἀπό τινος to get one's living from a thing, [Refs 5th c.BC+]; win favour, and the like, χάριν ἀπό τινος, ἔκ τινος, [Refs 5th c.BC+]; κ. φίλους, ἑταίρους, [Refs 5th c.BC+]
__I.1.b of consequences, bring upon oneself, αὑτῷ θάνατον [Refs 5th c.BC+]; incur, θεᾶς ὀργήν[Refs 5th c.BC+]; δυσσέβειαν κ. get a name for impiety, [Refs 5th c.BC+]
__I.1.c κ. τινὰς πολεμίους make them so, [Refs 5th c.BC+]
__I.2 procure or get for another, ἐμοὶ δ᾽ ἐκτήσατο κεῖνος [Refs 8th c.BC+]
__II in perfect and pluperfect with future κεκτήσομαι, to have acquired, i.e. possess, hold (opposed to χρῆσθαι, [Refs 8th c.BC+]; φωνὴν βάρβαρον κεκτ. [Refs 5th c.BC+]; ποίησιν to be master of it, [Refs 5th c.BC+]aorist, ἀγορὰς κτησάμενοι having market-places, [Refs 5th c.BC+] involving effort, [Refs 4th c.BC+]:—the differentbetween present and perfect appears from [Refs 5th c.BC+]: later, present in perfect sense, [NT]
__II.b of evils, ἄγος κεκτήσεται θεῶν [Refs 5th c.BC+]
__II.c have in store, opposed to ἔχω, have in hand, ready for use, ἔχων τε καὶ κεκτημένος.. κακά [Refs 5th c.BC+]; κ. ἱμάτιον own, opposed to ἔχειν (wear), [Refs]
__II.d absolutely, to be a property-owner, τῶν ἐκτημένων ἐν τῇ χώρᾳ [Refs 2nd c.BC+]
__II.2 ὁ κεκτημένος owner, master (especially of slaves), as substantive, [Refs 5th c.BC+]; of a husband, [Refs 5th c.BC+]; ἡ κεκτημένη my mistress, [Refs 5th c.BC+]
__III aorist 1 passive ἐκτήθην in passive sense, to be gotten, ἃ ἐκτήθη [Refs 5th c.BC+]; to be obtained as property, δουλόσυνος πρὸς οἶκον κτηθεῖσα [Refs 5th c.BC+]: future κτηθήσομαι Refs

_{LSJ Scripture Refs: Luke.18.12}