Definition of Fissure
Fissure: A cleft or groove. A fissure can be normal or abnormal.
A fissure in the cerebral cortex is a normal feature. It is a deep fold that involves the entire thickness of the brain wall.
A fissure in the anus is abnormal. It is a painful crack in the edge of the anus and is very painful. Also called an anal fissure or fissure in ano.
Source: MedTerms™ Medical Dictionaryhttp://www.medterms.com/script/main/art.asp?articlekey=16620
Last Editorial Review: 9/20/2012
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