peristalsis

The story

1. Ancient Greek · derived fromδύναμις περισταλτική“the action of the bowels by which their contents are propelled”
2. English todayperistalsis

From Ancient Greek δύναμις περισταλτική (dúnamis peristaltikḗ, “the action of the bowels by which their contents are propelled”), from περιστέλλω (peristéllō, “to wrap around”), from περι- (peri-, “around”) + στέλλω (stéllō, “to make ready, to prepare”).