adjective
Definition: Relating to the walls of a body part, organ, or cavity, or to the parietal bones in the skull.
Example: The parietal lobe of the brain is responsible for processing sensory information.
noun
Definition: A term used to describe a part of a structure, especially referring to walls or bones in the body.
Example: The parietal bone is one of the two bones that form the sides and roof of the skull.