Abbott-Smith Manual Greek Lexicon
Ἰσσαχάρ (G2466)
1 Ἰσσαχάρ (Rec. Ἰσαχ- , Ἰσασχ- (Elz.), T, -άχαρ ), ὁ indecl. (FlJ, Ἰσάχαρις, Ἰσάσχ- ) (Heb. יִשְׁשָׂכָר , Ge 30:18 ), Issachar : Re 7:7 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain