Term: amniotic sac
Literally meaning: “that surrounds contents”
Origin: Anc Greek
αμνίον/amnion (=liquid collection vessel) > probably derived from verb αμάω/amao=collect, gather
+σάκκος/sacos(=pocket or bag)
The author of the Iliad and the Odyssey, Homer (8th cen BC), used to the word αμνίον in order to define a vessel for warrior’s blood collection before their death Later, the term was used to denote that surrounds contents.
Amniotic sac is the sac of fluid in which the fetus develops in amniotes.