- the act of regurgitating.
- voluntary or involuntary return of partly digested food from the stomach to the mouth.
- Pathology. the reflux of blood through defective heart valves.
c.1600, from Medieval Latin regurgitationem (nominative regurgitatio), noun of action from past participle stem of regurgitare “to overflow,” from re- “back” (see re-) + Late Latin gurgitare “engulf, flood” (found in Latin ingurgitare “to pour in”), from gurges “whirlpool, gorge, abyss,” from PIE root *gwere- “to swallow.”
- The return of partially digested food from the stomach to the mouth.