Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun The third division of the stomach of a ruminant animal, located between the abomasum and the reticulum.

from The Century Dictionary.

  • noun The third stomach of a ruminant; the psalterium or manyplies. See abomasum.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Anat.) The third division of the stomach of ruminants. See manyplies, and Illust. under ruminant.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun The third part of the stomach of a ruminant.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun the third compartment of the stomach of a ruminant

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[Latin omāsum, bullock's tripe, probably of Celtic origin.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Latin omāsum

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