geniture

noun

1. Birth; begetting.

   “on Lady-Day, which was on the 25th of the same month in which I date my geniture,—my father set out upon his journey to London with my eldest brother Bobby, to fix him at Westminster school”

   “As Fagan points out, this horoscope may well have been computed from the planetary tables mentioned before. It is also possible that the astrologer who computed this geniture used Theon's reduction rule.”