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" (see gurges).
he complained that school was just memorization and regurgitation
regulate
regulation
regulator
Regulus
regurgitate
regurgitation
rehab
rehabilitate
rehabilitation
rehash
re-hear