Lexical Definition

‎μεταξύ‎ metaxý (met-ax-oo') between/meanwhile ^G:PREP
from ‎μετά‎ and a form of ‎σύν‎

between, mean while, next.

• betwixt (of place or person)
• (of time) as adjective, intervening, or (by implication) adjoining

Abbott-Smith

μεταξύ (< μετά + ξύν = σύν), [in LXX: Ge 31:50, Jg 5:27, III Ki 15:6; 15:32, Wi 4:10 16:19 18:23*;]
1. adv. of place and time (in NT time only);
(a) between: ἐν τῷ μ. (s.c. χρόνῳ), Jo 4:31;
(b) in late writers (FlJ, Plut., al.), like μετά (adv.), after, afterwards: τὸ μ. σάββατον, Ac 13:42 (cf. Cl., Ro., I Co., 44, 2).
2. Prep. c. gen., between: of place, Mt 23:35, Lk 11:51 16:26, Ac 12:6; of persons, as to mutual relation, Mt 18:15, Ac 15:9, Ro 2:15.†

Abbott-Smith References

Liddell-Scott-Jones

μεταξύ

(late form μετοξύ [Refs 1st c.AD+], adverb, (μετά, ξύν) properly in the midst: hence,

__I as adverb,
__I.1 of Place, betwixt, between, once in [Refs 8th c.BC+]
__I.2 of Time, between-whiles, meanwhile, [Refs 5th c.BC+]; τὰ μ. the intervening events, [Refs 5th c.BC+]present participle, μ. ὀρύσσων ἐπαύσατο in the midst of his digging, [Refs 5th c.BC+]; ἐξαναστάντες μ. δειπνοῦντες in the middle of supper, [Refs 4th c.BC+]; ἀπαγχομένη μ. κατεκλίθη (κατεκωλύθη Blass), i. e. in the interval between this and reviving, [Refs 5th c.BC+] in the middle of my discourse, [Refs 5th c.BC+]participle, μ. ὑπολαβεῖν to interrupt, [Refs 5th c.BC+]; ἐν τῷ μ. (i.e. χρόνῳ) [Refs 5th c.BC+]
__I.2.b in late writers, like{μετά} (adverb), after, afterwards, τὸ μ. σάββατον the next Sabbath, [NT]; οἱ μ. τούτων βασιλεῖς the kings who followed them, [Refs 1st c.AD+]; οἱ μ. τούτων, = Latin posterieorum, [Refs]
__I.3 of Qualities, τὰ μ. intermediate, i.e. neither good nor bad, [Refs 5th c.BC+]
__I.4 of Degree, ὅσον τὸ μ. how great is the difference, [Refs 4th c.BC+]
__I.5 Grammars, the neuter gender, [Refs 4th c.BC+]
__II as preposition with genitive, between, [Refs 5th c.BC+]; αἱ μ. τῶν λόγων διηγήσεις the explanations between the speeches, [Refs]; but μ. τῶν λόγων if I may interrupt the argument, [Refs]; μ. τῶν βασιλέων among kings, [Refs 1st c.AD+]; between parties to an agreement, τιμὴ ἡ συμφωνηθεῖσα μ. τινῶν [Refs 4th c.AD+]; τὰ μ. σύμφωνα the terms agreed between the parties, [Refs 5th c.AD+]: sometimes one of the extremes is omitted, ἄνωθεν τῶν Θυεστείων ῥακῶν μ. τῶν Ἰνοῦς [Refs 5th c.BC+]
__II.b μ. θύρας in the opening of the door, [Refs 2nd c.AD+]
__II.2 of Time, ὁ μ. τῆς δίκης τε καὶ τοῦ θανάτου [χρόνος] [Refs 5th c.BC+]; τὰ μ. τούτου meanwhile, [Refs 5th c.BC+]: as a preposition, it may either precede or follow its case, but more frequently precedes,[Refs 5th c.BC+]

_{LSJ Scripture Refs: Acts.13.42}