Main Entry: ab·oma·sum

Pronunciation: \ˌa-bō-ˈmā-səm\

Function: noun

Inflected Form(s): plural ab·oma·sa \-sə\

Etymology: New Latin, from Latin ab- + omasum ox's tripe

Date: circa 1706

: the fourth compartment of the ruminant stomach that follows the omasum and has a true digestive function — compare rumen, reticulum

— ab·oma·sal \-səl\ adjective