Definition: A feeling of sadness or depression, often used in the plural form to describe various whims or fancies.

Example: After a long week, she was overcome by a megrim that made her feel down.

Definition: A medical term referring to the passage of black, tarry stools, often indicating bleeding in the upper gastrointestinal tract.

Example: The doctor noted that the patient had melaena, which could suggest a serious condition.

Definition: A natural pigment found in the skin, hair, and eyes of humans and animals that gives them their color.

Example: The amount of melanin in your skin determines how dark or light it is.

Definition: A type of cell in the skin that makes a pigment called melanin, which gives color to the skin and protects it from the sun.

Example: Melanocytes are responsible for the color of our skin and hair.

Definition: The process by which melanin, the pigment responsible for skin color, is produced in the skin.

Example: Melanogenesis is essential for protecting the skin from UV radiation.

Definition: A type of skin cancer that develops from cells that produce pigment, often appearing as a dark spot or growth on the skin.

Example: The doctor diagnosed her with melanoma after examining the unusual mole on her arm.

Definition: Describing something that has a dark or black pigmentation, often related to skin or fur color.

Example: The melanotic condition of the animal gave it a striking appearance in the sunlight.

Definition: A hormone produced by the pineal gland that helps control sleep patterns and is released in response to darkness.

Example: Many people take melatonin supplements to help them sleep better at night.

Definition: A medical condition where a person has black, sticky stools or vomit that contains digested blood, usually due to bleeding in the digestive system.

Example: The doctor diagnosed him with melena after he reported black stools.

Definition: A specific medication used in cancer treatment, particularly in chemotherapy, that helps to kill or slow the growth of cancer cells.

Example: The doctor prescribed melphalan as part of the chemotherapy regimen for the patient.