Abomasal is a word commonly used to describe things that are related to the abomasum, the fourth stomach of a ruminant animal. If you are looking for synonyms for the word 'abomasal', some possible options include 'gastric', 'stomachic', 'digestive', 'gastrointestinal', 'enteric', 'intestinal', 'gut', 'inner', and 'visceral'. These words are used to describe various aspects of the digestive system of animals, including their stomachs, intestines, and other organs that are involved in breaking down food and extracting nutrients. So, depending on the context in which you are using the word 'abomasal', you might consider using some of these synonyms to help convey meaning more precisely.