The technical term for the study of hair is called what?

The technical term for the study of hair is "Trichology." This term is derived from the Greek word "trichos," which means hair. Trichology encompasses understanding the structure, function, and disorders of hair and the scalp. It includes studying hair growth cycles, types of hair, and various conditions that can affect hair health, making it a specialized field within the broader study of human anatomy and physiology.

In contrast, the other options encompass different areas of study. Biology is the general study of living organisms, including plants, animals, and microorganisms, but it does not focus specifically on hair. Hairology is not a recognized scientific term. Physiology is the study of the functions and mechanisms of living organisms, again not limited to hair. Therefore, trichology is specifically tailored to those interested in understanding hair at a detailed level.