cho·ri·on /ˈkoriˌɑn, ˈkɔr-/
  絨毛膜,漿膜,蛋殼
  cho·ri·on /ˈkorɪˌɑn, ˈkɔr-/ 名詞
  絨毛膜
  Cho·ri·on n.
  1. Anat. (a) The outer membrane which invests the fetus in the womb; also, the similar membrane investing many ova at certain stages of development. (b) The true skin, or cutis.
  2. Bot. The outer membrane of seeds of plants.
  ◄ ►
  chorion
       n : outermost membranous sac enclosing the embryo in higher
           vertebrates (reptiles, birds and mammals)