'Clematis' is a term that refers to a genus of woody climbing vines and shrubs, primarily found in the northern hemisphere. These plants are known for their beautiful and showy flowers, which come in a variety of colors, shapes, and sizes. While 'Clematis' is not a medical term, it is possible that you may have been looking for "clematide," which is a type of protein found in some animals and has been studied in the context of cancer research. However, without more context, I cannot be sure.