protr

Protrusion is a general term describing the act or state of being thrust forward, projecting, or extending beyond a surface or normal boundary. It can apply to a wide range of contexts, from biological structures to everyday objects and geological formations. In anatomy, a protrusion often refers to a body part that juts out. For example, a bone spur is a bony protrusion, and a herniated disc can cause a spinal disc to protrude beyond its normal position, potentially pressing on nerves. The term can also describe a physical defect, such as a protrusion of the eyes, known as exophthalmos.

Beyond biology, protrusion can describe the outward extension of a manufactured item or a natural feature. A protrusion on a piece of furniture might be an armrest or a decorative element that extends beyond the main body. In geology, a protrusion could refer to a rock formation that stands out from the surrounding landscape. The concept emphasizes an outward extension from an otherwise contained or level state. The degree and nature of the protrusion can vary significantly depending on the specific object or phenomenon being described.