Quick Definition
συγκληρονόμος, ου, ὁ, ἡ Adj a joint heir, participant
Strong's Definition
from 4862 and 2818; a co-heir, i.e. (by analogy) participant in common
KJV Usage: fellow (joint)-heir, heir together, heir with
UBS Dictionary of the Greek New Testament
adjc. | -ον | κληρόω + νομίζω
57.134 · Possess, Transfer, Exchange · Receive
one who also receives, receiver, fellow heir one who receives a possession together with someone else It is essential in rendering κληρονόμος (57.133) or συγκληρονόμος to avoid any implication of being an ‘heir’ to anyone who has died. The focus is upon receiving an unearned gift. In the biblical sense ‘heirs of God’ are those who will receive the blessings that God has for his people.
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Mounce Concise Greek Dictionary
συγκληρονόμος synklēronomos 4x
pr. a coheir, Rom. 8:17; a fellow participant, Eph. 3:6; Heb. 11:9; 1 Pet. 3:7*
Abbott-Smith Greek Lexicon
*† συν-κληρο-νόμος (Rec. συγκ-), -ου, ὁ a co-inheritor, fellow-heir: Ro 8:17, Eph 3:6; c. gen. rei, He 11:9, I Pe 3:7 (for exx., v. Deiss., LAE, 88 f.).†
Moulton & Milligan — Vocabulary of the Greek NT
συνκληρονόμος, “‘fellow-heir,’” which occurs gzater in the NT, is classed by Cremer ® p. 584 as ‘funknown in profane Greek,” but in addition to Cremer’s own reference to Philo kg. ad Gatum § 10, Deissmann (ZAZ?, p. 92) cites the word from an Ephesian inser. of the Imperial period, Ar7t. Mus. Ἴδε. III. p. 249, No. 633 Εϊὐτυχίδος. . . . σ[υγ]κληρονόϊμον αὐτ]οῦ, cf. especially 1 Pet 37. Other exx. from Byzantine Greek are P Mon I. 6! (A.D. 583) συνκληρονόμον αὐτὸν ποιῆσαι, and P Masp III. 67340 werso! τῷ[ν pel’ ἐμὲ κληρονόμων ἢ [ovy]kAq[polyopel[v.
Liddell-Scott-Jones — Greek-English Lexicon
συγκληρονόμος (sugklēronomos) — co-heir. συγκληρονόμ-ος (paroxytone), ον, joint-heir, Χριστοῦ [NT]