[mod. L., f. L. ab away from + omās-um or omass-um (a Gallic word) bullock’s tripe, hence a fat paunch.] The fourth, and true digestive, stomach of ruminants.
1706. Phillips, Abomasum, the Paunch of a Beast, the Tripes; in Anatomy, one of the four Stomachs of Ruminant Animals.
1741. Chambers, Cycl. It is in the Abomasus of calves and lambs that the rennet, or earning is found, wherewith housewives turn or curdle their milk.
1875. Blake, Zool., 32. In the 4th division, abomasus, or rennet, the lining membrane is filled with gastric tubular glands.
