Definition, synonyms and related words
An inlet, gully or cleft in the face of a cliff.
"The lab was preparing to release geo samples into the controlled ecosystem for observation."
Initialism of genetically engineered organism.
In plain English: Geo is not actually a noun; it's just a prefix meaning earth that gets attached to other words.
"The geo was an ancient Greek term for a narrow opening in the earth, often used to describe small caves."
Usage: The noun geo refers specifically to an inlet, gully, or cleft found on a cliff face rather than any other type of crack. Use this term when describing narrow fissures within steep rock formations instead of general terms like crevice or gap.
The prefix geo comes from the Norn word gjo and its ancestor Old Norse gjá. It originally meant a fissure or chasm before entering English usage.