[a. L. arbitrātrix (in Tertull.), fem. of arbitrātor: see -TRIX.] A female arbitrator, an arbitress.
1577. Holinshed, Descr. Brit., xxii. 122. Arbitratrix betweene hir naturall love to the one, and matrimoniall dutie to the other.
1648. Jos. Beaumont, Psyche, xix. 168 (D.). Her prerogative alone Who Arbitratrix sits of Heav’n and Hell.
1809. Tomlins, Law Dict., s.v. Award, An unmarried woman may be an arbitratrix.
