relatrix

Learned borrowing from Latin relātrīx. By surface analysis, relator +‎ -trix.

relatrix (plural relatrices)

1. (law, dated) A female relator.

• “relatrix”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.
• “relatrix, n.”, in OED Online ⁠, Oxford: Oxford University Press, launched 2000.