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Noun: hemorrhoidal vein
Usage: N. Amer (elsewhere: haemorrhoidal vein)
  1. Any of several veins draining the walls of the anal canal and rectum
    - rectal vein, vena rectalis, haemorrhoidal vein [Brit, Cdn]

Derived forms: hemorrhoidal veins

Type of: vein, vena, venous blood vessel

Encyclopedia: Hemorrhoidal vein