effectrix

Learned borrowing from Latin effectrīx. First attested in 1583. By surface analysis, effect +‎ -trix.

effectrix (plural effectrices)

1. (obsolete) An efficient cause.

• “effectrix, n.”, in OED Online ⁠, Oxford: Oxford University Press, 2008.

From effectus + -trix.

• (Classical Latin) IPA^(key): [ɛfˈfɛk.triːks]
• (modern Italianate Ecclesiastical) IPA^(key): [efˈfɛk.triks]
• Hyphenation: ef‧fec‧trīx

effectrīx f (genitive effectrīcis, masculine effector); third declension

1. female equivalent of effector (“effecter, producer, cause”)
   • c. 1230 – c. 1239, Robert Grosseteste, Hexaëmeron V.6, (ed. R. C. Dales & S. Gieben (Auctores Britannici Medii Ævi VI) [British Academy, 1982] in DMLBS):

     lūx […] diēī perstat effectrīx propria

     light […] remains the proper cause[r] of the day

Third-declension noun.

• “effectrix”, in Charlton T. Lewis and Charles Short (1879), A Latin Dictionary, Oxford: Clarendon Press
• “effectrix”, in Charlton T. Lewis (1891), An Elementary Latin Dictionary, New York: Harper & Brothers

• R. E. Latham, D. R. Howlett, & R. K. Ashdowne, editors (1975–2013), “effectrix”, in Dictionary of Medieval Latin from British Sources‎^[1], London: Oxford University Press for the British Academy, →ISBN, →OCLC
• “effectrix”, in Gaffiot, Félix (1934), Dictionnaire illustré latin-français, Hachette.