A fissure is a narrow crack or opening in the Earth's surface

Look up fissure in Wiktionary, the free dictionary.

Fissure or fissures may also refer to:

• Fissure (anatomy), a groove, natural division, deep furrow, elongated cleft, or tear in various parts of the body
• Fissure (botany), a split or crack; a line or opening of dehiscence.
• Fissure (dentistry), a break in the tooth enamel
• Sulcus (morphology), furrow or groove in the surface of a limb or an organ
• Sulcus (neuroanatomy), a large depression or groove in the cerebral cortex

• Fissure vein, a vein of ore aggregated in a fissure
• Fissure vent, a linear volcanic vent through which lava erupts, usually without any explosive activity
• Ice fissure, deep fracture or crevasse in glaciology

• Fissures (album), a 1997 album by Robert Rich and Alio Die
• Fissures (film), a 2009 film

• Fissure (gamer), online alias of professional esports player Baek Chan-hyung

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