Quick Definition
συγκάθημαι v. I sit with
Strong's Definition
from 4862 and 2521; to seat oneself in company with
KJV Usage: sit with
UBS Dictionary of the Greek New Testament
verb | καθίζω
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-κάθημαι [ WH ovr (cf. σύν, Π. fin.)]; fr. Hdt. down; [Sept.]; to sit together, to sit with another: pera twos, Mk. xiv. 54; revi, with one, Acts xxvi. 30.
Mounce Concise Greek Dictionary
συγκάθημαι synkathēmai 2x
to sit in company with, Mk. 14:54; Acts 26:30*
Abbott-Smith Greek Lexicon
συν-κάθημαι
(Rec. συγκ-), [in LXX: Ps 100 (101):6 (ישׁב) * ;]
to sit together or with: c. dat., Ac 26:30; seq. μετά, c. gen., Mk 14:54.†
Moulton & Milligan — Vocabulary of the Greek NT
συνκάθημαι, “am sitting with.” Ina case heard before the Emperor Claudius, Chvest. I. 14% 5, certain senators sit along with the Emperor apparently as _assessors—ovvka[Onpévoy αὐτῷ] συνκλητικ[ῶ]ν, and 15 συνεπένευσαν δὲ καὶ of συν]καθήμενοι [π]άντες σ[υνκλητικοὶ εὖ] εἰδότες κτλ. : οἴ. Ac 26° See also the record of lamp-oil in P Cornell 198 (B.C, 256) τοῖς παρὰ Διοσκουρίδου γραμματεῦσιν καὶ σ[υ]γκαθημένοις τὴν νύκτα ἐπὶ λύχνον κο(τύλαι) B.
Liddell-Scott-Jones — Greek-English Lexicon
συγκάθημαι (sugkathēmai) — to sit with. συγκάθ-ημαι, Ionic dialect συγ-κάτημαι, used as perfect of συγκαθέζομαι, sit as assessor with, [τῷ Καίσαρι] Wilcken [Refs 1st c.AD+]; live in the same quarters, [Refs 5th c.BC+]; of a number of persons, sit together, [Refs 5th c.BC+]; especially of persons sitting to deliberate, sit in conclave, meet in assembly, ἐν τῇ Πυκνὶ.. πρόβατα -ήμενα [Refs 5th c.BC+]
II. sink or subside together, settle down, [Refs 1st c.BC+]