Usage: 9 forms in 21 verses
Form Translated As     In Verse(s)
προκατελάβοντο first took LXX.Judg.3.28LXX.Ps.77.4
were first to take LXX.Judg.7.24
προκατελάβετο David first took LXX.2Sam.8.4LXX.1Chr.18.4
Gilead was first to take LXX.Judg.12.5
first to take LXX.Judg.1.13
first took LXX.Judg.9.50LXX.1Kgs.9.16LXX.2Chr.13.19LXX.2Chr.17.2
he first took LXX.1Kgs.11.24
was first to take LXX.2Kgs.12.17LXX.1Chr.11.5
προκατείληπται was taken LXX.1Kgs.16.18
προκαταλαβού be the first to take LXX.2Sam.12.28
προκαταλαβέτωσαν be first to take LXX.Ps.79.8
προκαταλαβέσθαι at first to take LXX.2Chr.32.1
προκαταλάβωνται to first take LXX.2Chr.32.18
προκαταλάβωμαι be the first to take LXX.2Sam.12.28
προκαταλάβηται be first to take LXX.Judg.1.12

Liddell-Scott-Jones

προκαταλαμβάνω (prokatalambanō) be first to take G:V

προκαταλαμβάνω-λαμβάνω,

seize beforehand, occupy in advance, especially by a military force, [Refs 5th c.BC+]:—middle, [Refs 2nd c.BC+], etc.:—passive, to be so occupied, [Refs 5th c.BC+]

__2 generally, preoccupy, τὸ βῆμα [Refs 4th c.BC+]; πράγματα προκατειλημμένα, by the previous speakers, [Refs 5th c.BC+]
__3 apprehend before, [Refs 2nd c.AD+] is falsa lectio here and in [Refs]
__4 passive, of events, to be predetermined, ὑπὸ τῆς εἱμαρμένης [Refs 4th c.BC+]
__II metaphorically, prevent, anticipate, frustrate, τῶν πόλεων τὰς ἀποστάσεις [Refs 5th c.BC+]; π. καὶ ἀπειλεῖν, of the legislator, [Refs 5th c.BC+]; of persons, anticipate or surprise them, [Refs 5th c.BC+]; τοῦ χειμῶνος -λαβόντος [αὐτόν] [Refs 2nd c.BC+]:—middle, π. τινά [Refs 3rd c.BC+] middle in [Refs] — passive, τῶν.. προκατειλημμένων κατηγορημάτων the charges that have been anticipated, [Refs 4th c.BC+]; to be surprised, [Refs 2nd c.BC+]; -ληφθέντες ἀναλαμβάνονται if taken in time they recover, [Refs 3rd c.AD+]
__III overpower first, π. ἡμᾶς ἐς τὴν ὑμετέραν ἐπιχείρησιν crush us in preparation for an attack on you, [Refs 5th c.BC+]:— passive, δεσμοῖς [Refs 2nd c.BC+]: of. passive in middle sense, προκατείλημμαί σ᾽ τύχη [Refs 4th c.BC+]
__III.2 without any notion of force, win over before, preoccupy, π. καὶ προκολακεύειν τὴν μέλλουσάν τινος δύναμιν [Refs 5th c.BC+]
__III.2.b ensure, ὑγιείην [Refs 5th c.BC+]
__III.2.c passive, to be prejudiced, αἱρέσει τινί [Refs 2nd c.AD+]
__IV fasten securely, [Refs 2nd c.AD+]