To make into or become a unit; consolidate.
To combine into one; become or make united; consolidate.
Unify is to become one, come into agreement or become whole.
An example of unify is when the states in the United States all came back together after the Civil War as one whole country.
(intransitive) Become one.
Origin of unify
French unifier from Old French from Late Latin ūnificāre Latin ūnus one uni– Latin -ficāre -fy