rumen definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
noun pl. rumina
the first stomach of a ruminant
Origin: Modern Latin ; from Classical Latin throat, gullet ; from Indo-European an unverified form reusmen, rumination, throat from source Sanskrit rōmantha
rumen definition by American Heritage Dictionary
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
noun pl. ru·mi·na or ru·mens
The first division of the stomach of a ruminant animal, in which most food collects immediately after being swallowed and from which it is later returned to the mouth as cud for thorough chewing. Also called paunch.
Origin: Latin rūmen, throat.
- ruˈmi·nal adjective
rumen - Science Definition
The first and largest division of the stomach in ruminant animals, in which the food is fermented by microorganisms. See more at ruminant.