Abbott-Smith Manual Greek Lexicon
ὀστέον (G3747)
4 ὀστέον (Att. contr. ὀστοῦν , -οῦ , and so Jo 19:36 ), -ου, τό , [in LXX chiefly for עֶצֶם ;] a bone : contr., ὀστοῦν (v. supr.), Jo 19:36 (LXX) ; uncontr. (as in Hom., Hdt.), ὀστέα , Lk 24:39 ; ὀστέων , Mt 23:27 , He 11:22 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain