συνομαίμων

ον, ονος, Subst.
A. of the same blood, kindred, Ps.-Phoc. 206:—as Subst., brother or sister, A. Pr. 410 (lyr.), E. Hel. 640 (lyr.), IT 848(lyr.).
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
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