Quick Definition
I unite
Strong's Definition
to yoke together, i.e. (figuratively) conjoin (in marriage)
Derivation: from G4862 (σύν) and the base of G2201 (ζεῦγος);
KJV Usage: join together
Thayer's Greek Lexicon
συζεύγνυμι: 1 aorist συνέζευξα; from Euripides, and Xenophon down; properly, to fasten to one yoke, yoke together: ἵππους, Xenophon, Cyril 2, 2, 26; tropically, to join together, unite: τί or τινα, of the marriage tie, Mat_19:6; Mar_10:9 (νόμος συζευγνυς ἄνδρα καί γυναῖκα, Xenophon, oec. 7, 30, and often so in Greek writings).
Mounce Concise Greek Dictionary
συζεύγνυμι syzeugnymi 2x
to join together; trop. join together, unite, Mat_19:6 ; Mar_10:9
Abbott-Smith Greek Lexicon
συν -ζεύγνυμι
( Rec. συζ -),
[in LXX : Eze_1:11 ; Eze_1:23 ( H2266 ) * ;]
to yoke to\-gether: metaph ., of union in wedlock, Mat_19:6 , Mar_10:9 .†
Moulton & Milligan — Vocabulary of the Greek NT
συνζεύγνυμι (~ συζεύγνυμι ) [page 607]
yoke together, join : P Giss I. 34 .3 (A.D. 265 6) (= Archiv v. p. 137) συνεζ̣ευγμένων τῶν γενομένων ἐπ᾽ αὐτῷ ὑπομνημάτων , and Wόnsch AF p. 20 .75 (iii/A.D.) εἴ τις ἄλλος ἵππος τούτοις μέλλει συνζεύγνυσθαι .
The verb is used metaph. of union in wedlock, as in Mat_19:6 , Mar_10:9 , in P Flor I. 36 .9 (beg. iv/A.D.) τοὺς παῖδας [συ ]νέ [ζ ]ευξα , and Kaibel 372 .22 ( c . iv/A.D.)
Κυριακὸν γὰρ ἐ [γ ]ὼ λιπόμην ἐφ᾽ ἐλπίσι ταύτης , Νόννης γαμετῆς συνζευχθῆναι θαλάμῳ .
Liddell-Scott — Intermediate Greek Lexicon
συζεύγνυμι fut. -ζεύξω "to yoke together, couple or pair together", Hdt. , Zen.: esp. in marriage, Eur. , etc.:— Mid. "to yoke for oneself", Xen. :—Pass. "to be yoked or coupled with", τινί Eur. : absol., συζυγέντες ὁμιλοῦσι they live "in close" familiarity, Xen.
STEPBible — Tyndale Abridged Greek Lexicon
συν-ζεύγνυμι
(Rec. συζ-), [in LXX: Eze.1:11, 23 (חָבַר) * ;]
to yoke together: metaphorically, of union in wedlock, Mat.19:6, Mrk.10:9.†
(AS)