1. (geology) formation of continents, ocean basins and plateaus via movements of earth's crust
   - epeirogenesis

Derived forms: epeirogenies

• untethered
• unthankful
• unthaw
• unthawed
• untheatrical
• unthematic
• unthinkable
• unthinkably
• unthinking
• unthinkingly
• unthought
• unthought-of
• unthoughtful
• unthoughtfulness
• unthread
• unthreatening
• untidily
• untidiness
• untidy
• untie
• untied
• untier
• until
• until now
• untilled