diarrhœa

From Middle French diarrie (French diarrhée), from Late Latin diarrhoea, from Ancient Greek διάρροια (diárrhoia, “through-flowing”), from διά (diá, “through”) + ῥέω (rhéō, “flow”). Spelling later altered to resemble the word's Latin and Greek roots.

diarrhœa (countable and uncountable, plural diarrhœas or diarrhœæ)

1. (chiefly British spelling) Archaic spelling of diarrhea.
   • 2005, Edward Shalts, The American Institute of Homeopathy Handbook for Parents, page 326:

     Stool. Crawling and constriction in rectum. Stool large and hard (Bry); whitish, watery, sour. Prolapse ani, and burning, stinging hæmorrhoids. Diarrhœa of undigested, food, fetid, with ravenous appetite. Children’s diarrhœa. Constipation; stool at first hard, then pasty, then liquid.