Dictionary
o•ma•sum
Pronunciation: (ō-mā'sum), [key]—
n.,
—pl. -saPronunciation: (-su), [key]
the third stomach of a ruminant, between the reticulum and the abomasum; the manyplies. See diag. under
ruminant. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.