Final answer:
The widest part of the pelvis is known as the greater pelvis, which is above the pelvic brim and is wider in females to facilitate childbirth.
Step-by-step explanation:
The correct spelling for the widest part of the pelvis is the greater pelvis. The greater pelvis, also known as the greater pelvic cavity or false pelvis, is the broad space above the pelvic brim. The pelvic brim, also called the pelvic inlet, separates the greater pelvis from the lesser pelvis.
The female pelvis has evolved to be wider with a larger subpubic angle and greater sciatic notch to accommodate childbirth. This greater width is a distinguishing feature when comparing the male and female pelvis, along with the larger pelvic outlet in females.