amnion

/หˆรฆm.nษช.ษ‘หn/

IPA: /AE1 M N IY0 AO0 N/

noun
  1. 1

    The innermost membrane of the fetal membranes of reptiles, birds, and mammals; the sac in which the embryo is suspended.

Source: https://en.wiktionary.org/wiki/amnion