So, is pelvis singular or plural? I have a pelvis, but I think it is composed of a left and right pelvis. You may have left and right pelves, but if I'm on a dig and find three sets of pelves, do I have three full pelvises? Then there's always the Elvis plural: Elvi. Pelvis: Pelvi. : ) What's correct in every instance? And what sounds right? David Peters St. Louis