| epamniotic | Upon or above the amnion. Origin: G. Epi, upon, + amnion (05 Mar 2000) |
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| epamniotic cavity | A developmental cavity that exists in some mammals and is derived by division of the proamniotic space; it is further removed from the embryo than the amniotic cavity in some mammals. Synonym: ectoplacental cavity. (05 Mar 2000) |