allantochorion

noun

al·​lan·​to·​cho·​ri·​on ə-ˌlan-(ˌ)tō-ˈkōr-ē-ˌän, -ˈkȯr- How to pronounce allantochorion (audio)
: an embryonic membrane consisting of a fused allantois and chorion

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allantochorion
allantoic
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“Allantochorion.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/allantochorion. Accessed 5 May. 2025.

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