Definition: A synthetic radioactive element with the atomic number 109, known for its very short half-life and produced in laboratories.

Example: Meitnerium is used in scientific research to study the properties of heavy elements.

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 type of plastic or a chemical compound that is used in making resins and other materials.

Example: The table is made of melamine, which makes it durable and easy to clean.

Definition: Relating to or characterized by an increased amount of melanin, which can cause dark pigmentation in organisms.

Example: The melanic form of the butterfly is much darker than its lighter counterparts.

Definition: A type of organism that has a dark pigmentation, often due to an excess of melanin.

Example: The melanic form of the butterfly is more common in areas with high sunlight exposure.

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: The condition of having dark coloration in the skin, hair, fur, or feathers due to a high level of melanin.

Example: The black panther is a well-known example of melanism in big cats.

Definition: A type of garnet that is black in color, often used as a gemstone.

Example: The jeweler showed me a beautiful necklace made with melanite garnets.

Definition: The process of producing or increasing melanin in a tissue or organism, which results in a darker color, or the darkening of soil due to humus.

Example: The melanization of the skin can occur due to sun exposure.

Definition: To make something dark or black, often by adding a dark substance or pigment.

Example: The artist decided to melanize the canvas to give it a deeper tone.

Definition: Describing something that causes the process of darkening or pigmentation in skin or other tissues.

Example: The melanizing agent in the cream helps to enhance skin tone.

Definition: To undergo or cause to undergo the process of becoming dark or black, often due to the presence of melanin.

Example: The skin is melanizing in response to increased sun exposure.