Pubis - pubes, adult; the part covered by pubic (i.e. adult) hair.⏎
Obturator - obturare, to occlude; obturator foramen was named because it is largely occluded by the obturator membrane.⏎
Platysma - platysma, spread out flat.⏎
Radius - radix, rod.⏎
Papyracea - papyros, papyrus, hence paper.⏎