n.
Pronunciation: ' rü-m ə n
Function: noun
Inflected Form: plural ru · mi · na \ -m ə -n ə \ or rumens
Etymology: New Latin rumin-, rumen, from L
Date: circa 1728
: the large first compartment of the stomach of a ruminant in which cellulose is broken down by the action of symbiotic microorganisms ― compare ABOMASUM , OMASUM , RETICULUM
– ru · mi · nal \ -m ə -n ə l \ adjective