- (rare) Of or pertaining to the United States of America.
- (rare) An inhabitant or citizen of the United States of America.
A rare and sporadic nonce term. The hyphen tends to be used as an attributive, but as a substantive.
The similar-looking Usian (IPA: /ˈjuːʒən/), which differs only in capitalization, is a separate word, one that never got beyond the proposal stage.