The lambdoid suture is a fibrous joint located at the back of the skull, connecting the two parietal bones to the occipital bone. It resembles an inverted "V" shape and plays a crucial role in the structure of the skull, allowing for growth during childhood and providing stability in adulthood. This suture is named for its lamb-like shape, derived from the Latin word "lambda." It typically fuses in early adulthood, but variations in fusion timing can occur. Proper development of the lambdoid suture is essential for normal skull formation and overall cranial health.