| chorioamnionic placenta | A form of placentation in which the amnion is fused to the inside of the chorion, thus permitting interchange of water and electrolytes between mother and foetus. (05 Mar 2000) |
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| chorioamnionitis | An inflammatory process involving the chorion, its foetal blood vessels, the umbilical cord, and the amnion by extension of the inflammation, as the amnion itself has no blood supply. This inflammatory process is potentially fatal to mother and foetus. (12 Dec 1998) |