n. Excessive and frequent evacuation of watery feces. [Middle English diaria, from Medieval Latin, from Late Latin diarrhoea, from Greek diarroia, from diarrein, to flow through : dia-, dia- + rhein, to flow, run; see sreu- in the Appendix of Indo-European roots.] di′ar·rheal, di′ar·rheic (-ĭk), di′ar·rhetic (-rĕtĭk) adj. |
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