Definition of rumen in English:

rumen

Line breaks: rumen
Pronunciation: /ˈruːmɛn
 
/

noun (plural rumens or rumina /-mɪnə/)

Zoology
  • The first stomach of a ruminant, which receives food or cud from the oesophagus, partly digests it with the aid of bacteria, and passes it to the reticulum.
    More example sentences
    • When calves are fed milk it is funnelled through the oesophageal groove to the true stomach, bypassing the rumen.
    • So mammals are unable to digest cellulose, except some ruminants that have cellulase-secreting bacteria in their rumens.
    • He was interested in improving digestive processes within the rumen, the first of the four stomachs of ruminant animals, where cellulose is broken down by bacteria.

Derivatives

ruminal

adjective
More example sentences
  • Few studies have been conducted to examine the effects of live yeast products on in vitro mixed ruminal microorganism fermentation.
  • The effects of both S. cerevisiae supplements on the fermentation of soluble starch by mixed ruminal microorganisms are shown in Table 4.
  • Low quality forage also can negatively affect reproduction by decreasing efficiency of ruminal N utilization caused by limited energy supply.

Origin

early 18th century: from Latin, literally 'throat'.

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Pronunciation: ˌkələrəˈto͝orə
noun
elaborate ornamentation of a vocal melody