Definition of optation in English:

optation

Pronunciation /ɒpˈteɪʃn/

noun

rare, literary
  • The action of wishing; a wish, a desire.

Origin

Late Middle English; earliest use found in John Trevisa (c1342–?1402), translator. From classical Latin optātiōn-, optātiō the act of wishing, a wish from optāt-, past participial stem of optāre + -iō.