ring mountain
noun
A ring- or horseshoe-shaped mountain formation, typically constituting the edge of a large crater (formerly especially on the moon).
Origin
Mid 19th century.
- permissive society
- permissive waste
- permissivism
- permissivist
- permissory
- permit
- permitable
- permit me
- permittable
- permittance
- permitted hours
- permittee
- permitter
- permittivity
- permix
- permixed
- permixtion
- Permo-Pennsylvanian
- Permo–Carboniferous
- Permo–Triassic
- permsec
- perm. sec.
- permselective
- permselectivity
- permutability