rumen defined in 1951 yearrumen - rumen;
rumen - Storage compartment of complicated stomach (rumen is really a diverticulum of oesophagus) of ruminants, into which newly eaten, but unchewed, food is passed and from which it (the 'cud') is subsequently returned to mouth for chewing. Some digestion of food (especially cellulose), and much synthesis of B vitamins which are absorbed by the animal, occurs by bacterial action in rumen; some products of cellulose digestion are absorbed by rumen.
near rumen in Knolik
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