omasum
/əʊˈmeɪsəm
/noun (plural omasa /əʊˈmeɪsə/) Zoology
The muscular third stomach of a ruminant animal, between the reticulum and the abomasum. Also called psalterium.By definition, foregut fermentors comprise animals with a pregastric fermentation chambers such as the rumen, reticulum, and omasum of ruminants and diverticula or fermentative sacs of other ruminant-like mammals....
- The stomach of mouse deer is three chambered (lacking a well-developed omasum), and these animals are ruminants.
- To do this they are doing experiments in small chambers, called parabiotic chambers, that use stomach tissue from sheep to simulate that of the rumen and the omasum, two of the four compartments in a cow's stomach.
Origin
Early 18th century: from Latin, literally 'bullock's tripe'.
- when all is said and done
- whence
- whencesoever
- whene'er
- whenever
- when in Rome (do as the Romans do)
- when-issued
- when it comes to ——
- when one's ship comes in (or home)
- when (or while) the cat's away, the mice will play
- when push comes to shove
- whensoe'er
- whensoever
- when the balloon goes up
- when the blind lead the blind, both shall fall into a ditch
- when the chips are down
- when the going gets tough, the tough get going
- when the shit hits the fan
- when the spirit moves someone
- when the whips are cracking
- whenua
- when ——'s at home
- where
- whereabouts
- whereafter