Hypertext Webster Gateway: "chorion"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Chorion \Cho"ri*on\, n. [NL., fr. Gr. ?.]
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.
From WordNet (r) 1.7 (wn)
chorion
n : outermost membranous sac enclosing the embryo in higher
vertebrates (reptiles; birds; mammals)
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