n, pl  ru*mi*na  or  rumens  :  the large first compartment of the stomach of a ruminant from which food is regurgitated for rumination and in which cellulose is broken down by the action of symbiotic microorganisms - called also paunch  - compare ABOMASUM OMASUM RETICULUM  .
 
 
 
Similar sounding terms:  Ra·man 
 
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