by 1882, from hemorrhage (n.). Related: Hemorrhaged; hemorrhaging.
Slang in Reports: B.I.D. for "Brought in Dead" and "Dotty" are, [Mr. Sidney Holland of London Hospital] considers, permissible expressions, but he draws the line at "fitting" and "hæmorrhaging." Only such terms, he says, should be used as outside doctors will understand. We would say that on a point of such odiously bad taste he might have been much more severe. [Lavinia L. Dock, "The American Journal of Nursing," 1906]
c.1400, emorosogie (modern form by 17c.), from Latin haemorrhagia, from Greek haimorrhagia, from haimorrhages "bleeding violently," from haima "blood" (see -emia) + rhage "a breaking," from rhegnynai "to break, burst." Related: Hemorrhagic.