1. Of or pertaining to, or of the nature of, haemorrhoids. ... 2. <anatomy> Of or pertaining to the rectum; rectal; as, the hemorrhoidal arteries, veins, and nerves. ... Origin: Cf. F. Hemorroidal, hemorrhoidal. ... (01 Dec 1998) ... Found on http://www.encyclo.co.uk/local/20973