, Plural fissurae
) is a groove, natural division, deep furrow, cleft, or tear in various parts of the body.
Various types of anatomical fissure are:
Fissure can also mean unnatural tract or ulcer, most commonly found in the anus
. One of the most common types of fissure is anal fissure
- Fissure vent: a volcanic vent that does not include explosive activity.