Quick Definition
συγκαθίζω v. I cause to sit down with, sit down together
Strong's Definition
from 4862 and 2523; to give (or take) a seat in company with
KJV Usage: (make) sit (down) together
UBS Dictionary of the Greek New Testament
verb | καθίζω
17.13 · Stances and Events Related to Stances · Sit
to sit down with, to be seated with, sitting with to sit down with someone or to be seated with someone
17.18 · Stances and Events Related to Stances · Sit
to seat with, to cause to sit down with to cause someone to sit down with someone
1 There are certain technical problems involved in treating the series καθέζομαι, κάθημαι[a], καθίζω[a] (17.12) and συγκάθημαι, συγκαθίζω[a] (17.13), since there appears to be an alternation in meaning between (1) being in a position and (2) assuming such a position. It would be possible to set up two distinct meanings or to assume that the respective forms are essentially ambiguous. In general, however, the participial forms indicate a state of being, while the non-participial forms imply assuming a particular position of being seated. However, there are certain subtle differences in the tenses of the participial forms, and hence one cannot determine precisely what are the referential distinctions.
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Thayer's Greek Lexicon
συγ-καθίζω [TWH συν- (ef. σύν, II. fin.)]: 1 aor. συνexabiaa; (see καθίζων ; a. trans. to cause to sit down together, place together: τινά, foll. by ἐν with a dat. of the place, Eph. ii. 6. Ὁ. intrans. to sit down together: Lk. xxii. 55 [where Lehm. txt. περικαθ.]. (Xen., Aristot., Plut., al.; Sept.)
Mounce Concise Greek Dictionary
συγκαθίζω synkathizō 2x
trans. to cause to sit down with, seat in company with, Eph. 2:6; intrans. to sit in company with; to sit down together, Lk. 22:55*
Abbott-Smith Greek Lexicon
περι-καθ-ίζω,
[in LXX for חנה, לחם ni., etc.;]
to invest, besiege (Diod., IV Ki 6:24, I Mac 11:61, al.).
to sit around: Lk 22:55, L, txt.†
Liddell-Scott-Jones — Greek-English Lexicon
συγκαθίζω (sugkathizō) — to sit down with. συγκαθ-ίζω, make to sit together or in a body, τὰ συνέδρια [LXX]:—middle or passive, sit in conclave, meet for deliberation, σ. τὸ δικαστήριον [Refs 5th c.BC+]
II. intransitive in active, sit together, [Refs 4th c.AD+]
II.2. settle down in a boiling pot, [Refs]
III. sit or settle down, of quadrupeds that lie down by doubling their legs under them, [Refs 4th c.BC+]; σ. ἐπὶ τὰ ὄπισθεν[LXX]; σῶμα συγκεκαθικός a bent, stooping figure, [Refs 4th c.BC+]; of men, crouch down, [Refs 1st c.AD+]; of women, Thessalus in [Refs]; also τὰ νέφη εἰς τὰ κοῖλα σ. [Refs 4th c.BC+]