Definition: In botany, the condition where the ovary is situated above the other floral parts, such as petals and sepals.

Example: The flower exhibits perigyny, with its ovary positioned above the surrounding petals.

Definition: The location in a planet's or other celestial body's orbit where it is closest to the sun.

Example: Earth reaches its perihelion in early January each year.

Definition: Related to the cell body of a neuron, which contains the nucleus and is essential for the neuron's function.

Example: The perikaryal region of the neuron is crucial for processing information.

Definition: The main part of a nerve cell that contains the nucleus and other important parts for the cell's function.

Example: The perikaryon is essential for the health and maintenance of the neuron.

Definition: A type of fluid found in the inner ear, located between the bony and membranous structures.

Example: The perilymph helps transmit sound vibrations to the inner ear.

Definition: The distance around the outside of a shape or area, often used in geometry to describe the total length of the edges of a figure.

Example: To find the perimeter of the rectangle, you add up the lengths of all four sides.

Definition: A layer of connective tissue that surrounds and protects groups of muscle fibers within a muscle.

Example: The perimysium helps to organize the muscle fibers into bundles, allowing for better coordination during movement.

Definition: Relating to the time just before and after a baby is born, especially the period of five months before and one month after birth.

Example: Perinatal care is essential for the health of both the mother and the baby.

Definition: In relation to the period shortly before and after birth.

Example: The baby was monitored closely perinatally to ensure its health.

Definition: A medical doctor who specializes in the care of pregnant women and their unborn babies, particularly those at high risk.

Example: The perinatologist monitored the health of the mother and fetus throughout the pregnancy.