Pleomorphic is a term used in biology and medicine to describe something that exists in various forms. However, there are several synonyms for the word pleomorphic that can be used to convey a similar meaning. These words include polymorphic, heterogeneous, variable, manifold, and diverse. All of these words suggest something that has multiple forms or variations, and they can be used to describe substances, organisms, or diseases. For example, cancer is often described as pleomorphic or heterogeneous because it can appear in many different forms and affects different parts of the body. Similarly, a virus may be described as pleomorphic because it can take on different shapes and sizes as it reproduces.