[CO- 3 b.] Arbiter along with another or others. Hence Co-arbitress, a female co-arbiter. Also Co-arbitration.

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1598.  Hakluyt, Voy., I. 153. The friendly composition made … by the hono. personages … with the assistance of their coarbiters on our part.

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1879.  J. Todhunter, Alcestis, 121. Persephone, August co-arbitress of Hades’ realm.

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