Mesosternum is a term used to describe a specific part of the anatomy of an animal. It refers to the middle segment of the sternum bone, which is found in the chest area. There are several synonyms for this word that can be used to describe the same part of the body. These include the terms mediasternum, central sternum, or middle sternum. Each of these synonyms can be used interchangeably to describe the same anatomical feature. When discussing the mesosternum in a scientific or medical context, it is important to use the appropriate terminology to ensure clarity and accuracy.