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 ?
Without such a protective coating it would be degraded by microorganisms already in the first stomach.
Ruminococcus albus is a non spore-forming obligatory anaerobic coccoid bacterium the natural habitat of which is the first stomach (rumen) of the ruminants.
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