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rumen

rumen

1 9.9
First part of the stomach in animals like cows where swallowed food collects to be chewed again
  • noun
  • /ˈruːmən/
  • Specialized
translation icon : rumen
  • Also, the passage rate of roughages through the rumen and digestive tract increases.
  • rumen papillae
  • rumen fluid
  • rumen bacteria

Examples

  • Octenol is given off by ruminant animals when they digest grasses in their rumen, the first compartment of their stomach.

    Academic text (1996)
  • The stable pH also enhanced microbial protein synthesis in the rumen.

    Academic text (2015)
  • I'm actually inside the rumen-- that first compartment of the stomach.

  • When the rumen starts holding all this gas, it restricts the diaphragm from breathing.

  • There's microorganisms-- bacteria in the rumen, millions of 'em.

  • The fistula allows scientists to sample partially digested samples from the animal's rumen.

    Academic text (2004)
  • Meanwhile, Carlson has become the first scientist to document rumen protozoa's role in the transfer of antibiotic resistance within the bovine stomach.

    Academic text (2006)
  • Indeed, cows' rumens are really fermentation vats, natural versions of the industrial vats used to produce ethanol.

    Academic text (2002)
  • Cows have a specialized rumen that allows them to ferment and break down tough plant materials.

  • The rumen of a sheep is filled with microbes that help it digest grass efficiently.

Synonyms

first stomach
vsrumen
  • Specialized
8.3

Part of a cow's stomach that stores food to be chewed again

is the precise anatomical term for the same compartment

Surface Forms

rumen singular
rumens plural

Etymology

Rumen comes from a Latin word rumen meaning 'throat' or 'gullet', and it shares the same root as ruminate, which means 'to chew over'. So the rumen is the stomach part where ruminant animals store food and later bring it up to chew again as cud.