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A narrow opening, made by the parting of any substance; a cleft; as, the fissure of a rock.
To cleave; to divide; to crack or fracture.
a groove, fold, or slit that may be normal or abnormal
(FISH your): A thin but deep linear split in the epidermis that extends into the dermis. Severe dry skin can have fissures.
an abnormal anal opening that can cause pain and bleeding.
a split in the anal mucosal surface
a split in the squamous epithelium at or just inside the anal verge
a split or tear in the lining of the gut, sometimes caused by constipation
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