first stomach

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Noun1.first stomach - the first compartment of the stomach of a ruminant; here food is collected and returned to the mouth as cud for chewing
ruminant - any of various cud-chewing hoofed mammals having a stomach divided into four (occasionally three) compartments
stomach, tum, tummy, breadbasket - an enlarged and muscular saclike organ of the alimentary canal; the principal organ of digestion
References in periodicals archive ?
RUMEN A cow can pack away more than 160 liters (40 gallons) of food and water in its rumen, or first stomach chamber
Without such a protective coating it would be degraded by microorganisms already in the first stomach.
DDF was the first stomach cancer organization and now has 27 chapters in the US, Canada, and Germany with thousands of supporters and volunteers.
Kenny remembers having his first stomach haemorrhage at just eight.
The first stomach chamber is called the rumen, where large amounts of food are stored.
ARS scientists have found that an antibiotic-resistant strain of Salmonella becomes especially virulent when tucked inside protozoa in the rumen, or first stomach, of cattle.
SLIMLINE: The newlook Joanne and, right, with AJ; STRUGGLE: Heavyweight Joanne before her first stomach operation
three or four times the size of its first stomach (the rumen).
Scientists have found that foliage from a tree species in Africa appears to suppress the protozoa which inhabit the rumen, animals' first stomach, which receives food or cud.