Lexical Definition

‎μετέχω‎ metéchō (met-ekh'-o) to share ^G:V
from ‎μετά‎ and ‎ἔχω‎

be partaker, pertain, take part, use.

• to share or participate
• by implication, belong to, eat (or drink)

Abbott-Smith

μετ-έχω, [in LXX: Pr 5:17 (אֵת), 1:18, I Es 5:40 8:70, Si 51:28, al.;]
to partake of, share in: ἐπ’ ἐλπίδι τοῦ μετέχειν, I Co 9:10; c. gen. rei, I Co 9:12 10:21, 30, He 2:14; in sacramental sense, ἑκ τ. ἐνὸς ἄρτου μ., I Co 10:17 (cf. MM, xvi); metaph., γάλακτος, He 5:13; of belonging to a tribe, He 7:13.†

Abbott-Smith References

Liddell-Scott-Jones

μετέχω,

Aeolic dialect πεδέχω [Refs 7th c.BC+]; infinitive πεδέχην [Refs]: future μεθέξω [Refs 5th c.BC+]: perfect μετέσχηκα [Refs 5th c.BC+]:—partake of, share in:— Constr.:

__1 mostly with genitive of things only, κακοτάτων, βρόδων, Alc.[same place], [Refs 7th c.BC+]; ἀγαθῶν, κακῶν, βίου, [Refs 6th c.BC+]; τῆς τοῦ Μάγου ὕβριος Hdt.[same place]; μ. τοῦ λόγου to be in the secret, [Refs 5th c.BC+] to be members of the [Refs][same place]; μ. τῆς πόλεως, τῆς πολιτείας, [NT+5th c.BC+] partake of something in common with another, οὔ οἱ μ. θράσεος [Refs 5th c.BC+]
__2 frequently the part or share is added, τοῦ πεδίου οὐκ ἐλαχίστην μοῖραν μ. [Refs 5th c.BC+]
__3 with accusative of things, μ. τὸ ἴσον (i.e. μέρος) τῶν ἀγαθῶν τινι[Refs 5th c.BC+]
__4 rarely with accusative only, ἀκερδῆ χάριν μ. [Refs 5th c.BC+]
__5 with dative of things only in a corrupt passage, τῇ.. κατὰ τὴν χώραν.. οἰκήσει μετεῖχον [Refs 5th c.BC+]
__6 μ. περὶ ἔργων καὶ τεχνῶν have some knowledge respecting.., [Refs 4th c.BC+]
__7 absolutely, to be a partner, [Refs 3rd c.BC+]; οἱ μετέχοντες the partners, accomplices, [Refs 5th c.BC+]
__II in Platonic Philos., participate in a universal, [Refs 4th c.BC+] —passive, μετέχονται (i.e. αἱ ἰδέαι) are participated in,[Refs 5th c.BC+]
__III in Aristotelian Logic, share in, i.e. admit the definition of, τὰ μὲν εἴδη μετέχει τῶν γενῶν, τὰ δὲ γένη τῶν εἰδῶν οὔ [Refs 4th c.BC+]

_{LSJ Scripture Refs: 1Cor.10.17}