What is meant by the true stomach?

The term "true stomach" typically refers to the glandular stomach, which is the main site for digestion in certain animals, including humans. In ruminants, such as cows and sheep, the true stomach is specifically the abomasum, which follows the fermentation chambers (rumen, reticulum, and omasum) and is responsible for enzymatic digestion. In contrast to the fermentation chambers, the true stomach secretes digestive enzymes and acids to break down food further.