The word "echinological" refers to the study of animals or organisms with spiny or prickly surfaces. There are several synonyms that can be used to describe this type of study, such as spiny morphology, spinescent biology, spiky anatomy, and prickly zoology. Each of these terms can be used to describe the same field of study, but can also provide a more specific description of the types of organisms being studied. By using synonyms for echinological, researchers and scientists can convey their work more clearly and allow others to easily understand the focus of their research.