Which term is associated with the formation of cells in medical terminology?

The term that is associated with the formation of cells in medical terminology is found in the suffix "-plasia." This suffix comes from the Greek word "plasis," meaning formation or development, and is commonly used in various medical contexts to describe the growth or development of cells and tissues. For instance, "hyperplasia" refers to an increase in the number of cells in a tissue or organ, while "dysplasia" indicates abnormal development of cells.

The other terms listed do not pertain specifically to cell formation. "-phobia" denotes an irrational fear of something and does not connect to cellular development. The suffix "-plastic" relates to the formation or development in a broader sense but is typically used in conjunction with other terms rather than standing alone to denote the process of forming cells. Meanwhile, "-phoresis" pertains to the movement or carrying of substances, particularly in the context of biological processes, and does not reference cell formation either. Thus, "-plasia" is the correct term to describe the process related to the formation of cells.