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-rrhagia

Also ‑rrhagic and ‑rrhage.

An excessive flow or discharge.

Greek ‑rrhag‑, stem of Greek rhēgnunai, to burst.

Terms often contain the linking vowel ‑o‑ before the ending. Examples include menorrhagia (Greek mēn, month), abnormally heavy bleeding at menstruation; metrorrhagia (Greek mētra, womb), abnormal bleeding from the womb; and haemorrhagia (US hemorrhagia)(Greek haima, blood), loss of blood from a ruptured blood vessel.

Though adjectives can in theory be formed in ‑rrhagic, only haemorrhagic is at all common. Similarly, the only common example of a word in the noun ending ‑rrhage is haemorrhage, the usual term for an escape of blood from a ruptured vessel.