Inflammation of the meninges, typically caused by viral or bacterial infections, leading to symptoms such as headache, fever, and neck stiffness.

A crescent-shaped cartilage in the knee joint that acts as a cushion and stabilizer. The term can also refer to the curvature of a liquid’s surface in a container.

The natural biological process marking the cessation of a woman’s menstrual cycles, typically occurring around age 50.

The monthly cycle of changes in a woman’s reproductive system, including ovulation and menstruation, typically lasting about 28 days.

The shedding of the uterine lining in females, occurring as part of the menstrual cycle, and typically marked by the discharge of blood and tissue.

A region of actively dividing cells in plants that gives rise to new tissues, responsible for growth in length and thickness.

Relating to or characteristic of meristems, which are regions in plants where cells are actively dividing and contributing to growth.

Variation in the number of repeated structures in an organism, such as segments or fins, often used to study genetic diversity.

The process of forming or developing meristematic tissues in plants or regenerating lost parts of a plant.

The ability of a cell membrane to allow certain substances to pass through while blocking others.