- synchorial
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* * *
syn·cho·ri·al .sin-'kōr-ē-əl, .siŋ-, -'kȯr- adj having a common placenta used of multiple fetuses <fraternal twins showing \synchorial fusion>* * *
syn·cho·ri·al (sin-korґe-əl) sharing a common placenta; said of multiple fetuses.
Medical dictionary. 2011.