n.
Pronunciation: ' am-n ē - ˌ än, - ə n
Function: noun
Inflected Form: plural amnions or am · nia \ -n ē - ə \
Etymology: New Latin, from Greek, caul, from amnos lamb ― more at YEAN
Date: 1667
1 : a thin membrane forming a closed sac about the embryos or fetuses of reptiles, birds, and mammals and containing the amniotic fluid
2 : a membrane analogous to the amnion and occurring in various invertebrates
– am · ni · ot · ic \ ˌ am-n ē - ' ä-tik \ adjective