uniform (adj.)

1530s, "of one form," from Middle French uniforme (14c.), from Latin uniformis "having only one form or shape," from uni- "one" (see uni-) + forma "form" (see form (n.)). Related: Uniformly.

uniform (n.)

"distinctive clothes worn by one group," 1748, from French uniforme, from the adjective (see uniform (adj.)).

uniform (v.)

1680s, "to make alike," from uniform (adj.). Meaning "to dress in a uniform" is from 1861. Related: Uniformed.