Prefix used in loanwords and modern compounds to mean 'one' or 'single', similar to English 'uni-'. Not a standalone noun.
See also: 単一 (たんいつ)
Unisex designs are popular.
Uniqlo is known for its unique corporate culture.
floorball; unihockey
unicast
unicycle
Borrowed from English 'uni-', a prefix meaning 'one' or 'single'.