amniotic sac

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)

Coined/History

The author of the Iliad and the Odyssey, Homer (8^th 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.

Definition

Amniotic sac is the sac of fluid in which the fetus develops in amniotes.