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chordophone
-chore
chore
chorea
choreograph
choreography
choriamb
choric
chorioallantois
choriomeningitis
chorion
chorionic gonadotropin
chorionic villus
chorionic villus sampling
chorister
chorizo
chorography
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chorioallantois
cho·ri·o·al·lan·to·is [ kàwree ō ə lántō iss ]


noun 
Definition:
 
fetal membrane: a membrane surrounding an embryo. In a bird's or reptile's egg, it lies next to the shell. In mammals, it forms a major part of the placenta.
[Mid-20th century. <chorion]

cho·ri·o·al·lan·to·ic [ kàwree ō àllən tṓ ik ] adjective
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