I. u ‧ ni ‧ form 1 S3 /ˈjuːnəfɔːm, ˈjuːnɪfɔːm $ -ɔːrm/ BrE AmE noun [uncountable and countable]
1 . a particular type of clothing worn by all the members of a group or organization such as the police, the army etc
school/army/police etc uniform
He was still wearing his school uniform.
2 . in uniform
a) wearing a uniform:
He was on duty and in uniform.
b) in the Army, Navy etc:
my 33 years in uniform
II. uniform 2 AC BrE AmE adjective
[ Date: 1500-1600 ; Language: French ; Origin: uniforme , from Latin uniformis , from uni- + -formis (from forma 'form' ) ]
being the same in all its parts or among all its members:
Grade A eggs must be of uniform size.
—uniformly adverb