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1.
Formed by combining the Greek and Latin medical roots 'dia' meaning "through completely" and 'rrhagia' meaning "bloody or excessive discharge."

Also known by it's shortened version, "rrhag" or "rrhagia."
Example 1:

"Shit, I got that nasty rrhag today."

Example 2:

Jim: "What did you do last night to prepare for the marathon?"
Kimmy: "F**k, I actually went to happy hour and blacked out by 7. Feeling it today..."
Jim: "Aw shit, gurl. That sucks. Diarrhea?"
Kimmy: "Naw, worse... Diarrhagia."
by JGerkstain April 12, 2013