noun

1. the first book of the Bible, giving an account of the Creation: abbrev. Gen, Gn, or Ge
2. pl. geneses -·ses′ (-sēz′) the way in which something comes to be; beginning; origin

Etymology: ME < OE & LL(Ec) < L, birth, generation < Gr (used in LXX for Gen.) < base of gignesthai, to be born: see genus