Lexic.us

2. Noun. A pathological condition caused by painful masses of dilated veins in swollen anal tissue. ¹

¹ Source: wiktionary.com

Medical Definition of Haemorrhoids

1. A varicose dilatation of a vein of the superior or inferior haemorrhoidal plexus, resulting from a persistent increase in venous pressure. Presents as a livid and painful swelling formed by the dilation of the blood vessels around the margin of, or within, the anus, from which blood or mucus is occasionally discharged. The singular haemorrhoid is rarely used. Synonym: piles. Origin: Gr. Haimorrhois, L. Haemorrhoidae. (01 Dec 1998)

Lexicographical Neighbors of Haemorrhoids

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