rumen

noun
ru·​men | \ ˈrü-mən How to pronounce rumen (audio) \
plural rumina\ ˈrü-​mə-​nə How to pronounce rumina (audio) \ or rumens

Definition of rumen

: 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

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Other Words from rumen

ruminal \ ˈrü-​mə-​nᵊl How to pronounce ruminal (audio) \ adjective

Examples of rumen in a Sentence

Recent Examples on the Web

That methane is produced in their rumens from fermentation of grasses or corn. Julia Rosen, latimes.com, "Why tiny microbes may be a big factor in how climate change unfolds," 18 June 2019 Cows and other ruminants such as goats and sheep have a special stomach called a rumen that houses millions of microbes. Elizabeth Pennisi, Science | AAAS, "Gut bacteria could be key to producing tastier cow’s milk," 3 July 2019 The rumen is the first of four compartments found in a ruminant’s stomach, where grass is partially digested via fermentation before passing through the rest. National Geographic, "Can methane burps be bred out of cows?," 3 July 2019 And this rumen is like a little ecosystem — just like studying deep-sea sediments. Julia Rosen, latimes.com, "Why tiny microbes may be a big factor in how climate change unfolds," 18 June 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'rumen.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of rumen

1707, in the meaning defined above

History and Etymology for rumen

New Latin rumin-, rumen, from Latin

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Dictionary Entries near rumen

rumdum

Rumelia

Rumelian

rumen

rumenitis

rumeno-

rumenocentesis

Statistics for rumen

Last Updated

26 Sep 2019

Look-up Popularity

Time Traveler for rumen

The first known use of rumen was in 1707

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More Definitions for rumen

rumen

noun
ru·​men | \ ˈrü-mən How to pronounce rumen (audio) \
plural rumina\ -​mə-​nə How to pronounce rumina (audio) \ or rumens

Medical Definition of rumen

: 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

More from Merriam-Webster on rumen

Rhyming Dictionary: Words that rhyme with rumen

Britannica.com: Encyclopedia article about rumen

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