downfault

English

Etymology

From down- +‎ fault.

Noun

downfault (plural downfaults)

1. (geology) A graben (area sunken relative to surrounding land).

Verb

downfault (third-person singular simple present downfaults, present participle downfaulting, simple past and past participle downfaulted)

1. (geology) To form a fault that is sunken relative to the surrounding land.