(|)rēˌgərjə|tāshən, -gə̄j-, -gəij-, rə̇ˌ ̷ ̷ ̷ ̷ˈ ̷ ̷ ̷ ̷ noun
Etymology: Medieval Latin regurgitation-, regurgitatio, from regurgitatus (past participle of regurgitare ) + Latin -ion-, -io -ion
: an act of flowing, pouring, or gushing back or out again ; specifically : reversal of the natural direction in which the current or contents flow through a tube or cavity of the body (as the casting up of incompletely digested food by some birds feeding their young or the backward flow of blood through a defective heart valve)
mitral regurgitation
• re·gur·gi·ta·tion·al -shən ə l, -shnəl adjective