Quick Definition
σύντροφος, ου, ὁ Adj a foster brother
Strong's Definition
from 4862 and 5162 (in a passive sense); a fellow-nursling, i.e. comrade
KJV Usage: brought up with
UBS Dictionary of the Greek New Testament
adjc. | -ου | τρέφω
10.51 · Kinship Terms · Kinship Relations of the Same Generation
foster brother or foster sister a person offered parental care and/or adoption along with the reference person, though not related by blood It is possible, however, that σύντροφος in ACT 13:1 has the meaning of ‘a close friend from childhood’ (see 34.15).
In some languages ‘a foster brother’ may be referred to as ‘a person who becomes a brother by being adopted’ or ‘a person who grows up just as though he were a brother.’
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Thayer's Greek Lexicon
σύν-τροφος, -ov, 6, (συντρέφω), [fr. Hdt. down], nourished with one (Vulg. collactaneus [Eng. foster-brother ]) ; brought up with one; univ. companion of one’s childhood and youth: τινός (of some prince or king), Acts xiii. 1. (1 Mace. i. 6; 2 Mace. ix. 29; Polyb. 5, 9, 4; Diod. 1, 53; Joseph. b. j. 1,10, 9; Ael. v. h. 12, 26.)
Mounce Concise Greek Dictionary
σύντροφος syntrophos 1x
nursed with another; one brought up (NIV) or educated with another, intimate friend, friend of the court (RSV) Acts 13:1*
Abbott-Smith Greek Lexicon
σύν-τροφος, -ου, ὁ
(< συντρέφομαι, to be brought up together) [in LXX: III Ki 12:24, I Mac 1:6 R, II Mac 9:29 * ;]
prop., one nourished or brought up with, a foster-brother: Ac 13:1 EV.
In Hellenistic usage, as a court term, an intimate friend of a king (v. Deiss., BS, 305, 310 f.): Ac 13:1 (cf. also MM, xxiv).†
Moulton & Milligan — Vocabulary of the Greek NT
σύντροφος. For the lit. meaning ‘‘foster-brother”’ cf. PSI VI. 5845 (iii/B.C.) ὃ ἀποδιδούς σοι τὴν ἐπιστολὴν τυγχάνει dv Βιαίου σύντροφος, P Oxy VII. 1034? (11}Α..} κληρονόμους καταλείπω τὴν θυγατέρ[α] μου τινὰ καὶ τὸν {rov} σύντροφον αὐτῆς τινὰ καί τινα, ‘I leave as my heirs my daughter. and her foster-brother y and z ”’ (Ed.), P Ryl II. 1063 (a.p. 158) παρὰ Καπίτωνος συντρόφου ἀπελευθέρου Πτολεμᾶς μητρὸς Tacovxapiov, ‘‘from Capiton, foster-brother and freedman of Ptolema, his mother being Tasoucharion’’ (Edd.), and the Phrygian sepulchral inscr. cited by W. M. Ramsay (Searing, p. 189) — Μένανδρος Ἵππωvos καὶ ᾿Αμειὰς Τ είHove θρεπτῷ, καὶ ᾿Απολλώνιος καὶ Διονύσιος συντρόφῳ ὑπὲρ τῶν εἰδίων Διὶ Βροντῶντι, Part VII.
Liddell-Scott-Jones — Greek-English Lexicon
σύντροφος (suntrophos) — brought up with. σύντροφ-ος, ον, brought up together with, τινι [Refs 5th c.BC+]; also with genitive, foster-brother, οἱ μόθακες σ. Λακεδαιμονίων [Refs 3rd c.BC+]; σ. τοῦ βασιλέως Σελεύκου, etc., [Refs 2nd c.BC+]; and in Comedy texts phrase, τηγάνων σ. μειρακύλλια [Refs 4th c.BC+]; frequently of domestic animals, σ. τοῖσι ἀνθρώποισι [Refs 5th c.BC+]; τοῖς θηρίοις πόθος τῶν σ. [Refs 5th c.BC+]; κυνίδιον σ. [Refs 1st c.AD+] bred up with me, says Ajax of the Athenians, [Refs 5th c.BC+]; of like habits with oneself, [Refs 5th c.BC+]; Ζωτίκῳ συντρόφῳ his foster-brother, [Refs 1st c.BC+]; compare συντρόφη:—τὸ σ., ={συντροφία}[Refs 4th c.BC+]
2. generally, living with, τοῖς φονεῦσι [Refs 5th c.BC+]; ξ. ὄμμα the eye or presence of a companion, [Refs]; used to a thing, σ. ὤν (i.e. ἀνάγκαις) [Refs 5th c.BC+]; φιλοσοφίᾳ, πενίᾳ, κολακείᾳ, [Refs 2nd c.BC+]; ἁρμονίης, μέθας, [Refs]
3. of things, habitual, νόσημα [Refs 5th c.BC+]; τὰ ξ. everyday evils, [Refs 5th c.BC+]; τὸ τῆς πάλαι ποτὲ φύσεως σ. the congenital property of nature, [Refs 5th c.BC+]; πῦρ τὸ σ. innate heat, [Refs 5th c.BC+]; σ. τινί natural to, χυμῷ [Refs 5th c.BC+]; τὸ ἐναντιώτατον [πρόσωπον] οὐδὲ σ. ἡμῖν ὑπάρχον the opposite face (that of the dying patient) not being familiar to us, [Refs 2nd c.AD+]; τῇ Ἑλλάδι πενίη αἰεὶ σ. [Refs 5th c.BC+] his habitual cry, [Refs 5th c.BC+] adverb, -φως ἔχειν with dative, to be suitable, [Refs 5th c.BC+]
II. active, joint-herd, fellow-herdsman, τῆς ἀγέλης [Refs 5th c.BC+]
II.2. τοῖς ὕδασι σ. τῶν ἀναβλαστανόντων assisting in nourishing.. , [Refs 5th c.BC+]