Meaning of “unique” - Learner’s Dictionary

unique

adjective uk us /juːˈniːk/
NOT THE SAME

B2 different from everyone and everything else:

Everyone's fingerprints are unique.
SPECIAL

B2 unusual and special:

a unique opportunity
be unique to sb/sth

to exist in only one place, or be connected with only one person or thing:

It's a method of education that is unique to this school.
uniquely adverb
uniqueness noun [ U ]

(Definition of “unique” from the Cambridge Learner’s Dictionary © Cambridge University Press)