Abomasa

Part of speech: noun

Definitions

1. An anatomical term referring to the stomach compartment in ruminants, specifically the fourth chamber used for digestion
2. It denotes the area where food is further broken down after initial digestion in other stomach sections
3. A part of the digestive system in certain animals where enzymatic processes occur and nutrients are absorbed

Etymology: "Abomasa" is the plural of "abomasum," the fourth and final compartment of a ruminant's stomach, the true stomach where digestive enzymes do their work. The name looks like a Latin compound, and it is one, but its second half is the more interesting part. "Omasum" is a Latin term for the tripe of a bullock, the stomach lining of a cow, so the fourth chamber was named for being the part that lies "away from" that tripe. The name was built in New Latin, the scholarly Latin used by naturalists and physicians from the early modern period onward, rather than inherited from classical Rome. Anatomists needed labels for each stomach compartment, and they formed them by attaching the prefix "ab-" ("away from") to the existing word for the neighbouring tripe. The result describes the organ by its position in the sequence of compartments rather than by its function.