pregnation
/prɛɡˈneɪʃn/Now rare
noun
Formerly: †= pregnancy ( obsolete ). In later use: the act of making or fact of becoming pregnant; impregnation.
Origin
Late Middle English; earliest use found in MS Hunterian 95. From Middle French pregnacion pregnancy, fertility and its etymon classical Latin praegnātiōn-, praegnātiō pregnancy from praegnāt-, praegnās pregnant + -iō.