The prefix “melan-” derives from the Greek word “melas,” meaning black or dark. It appears in medical and biological terms to denote dark pigmentation or color, as in melanin (dark skin pigment) and melanoma (malignant tumor of melanocytes).​

Origin and Etymology

This prefix stems from ancient Greek “μέλας” (mélas), signifying black or dark hue. In medicine, it relates to pigmentation, such as in melanocytes (cells producing melanin).​

Medical Examples

• Melancholia: historical term for depression, linked to the theory of “black bile.”
• Melanin: primary pigment determining skin, hair, and eye color.
• Melena: dark stool color due to gastrointestinal bleeding.