c. 1400, emorosogie (modern form by 17c.), from Latin haemorrhagia, from Greek haimorrhagia, from haimorrhages "bleeding violently," from haima "blood" (see -emia) + rhagē "a breaking, gap, cleft," from rhēgnynai "to break, burst," from PIE *uhreg- "break." Related: Hemorrhagic.
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<a href="https://www.etymonline.com/word/haemorrhage">Etymology of haemorrhage by etymonline</a>
Harper, D. (n.d.). Etymology of haemorrhage. Online Etymology Dictionary. Retrieved $(datetime), from https://www.etymonline.com/word/haemorrhage