What does fissure mean?
A long, narrow opening or crack in the earth's surface, especially one caused by tectonic movement or volcanic activity. A fissure can also refer to a deep cleft or groove in a surface.
Example
"The geologist studied the fissure in the rock face to understand the tectonic forces that had created it."
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.