to force sb / sth into a particular state or condition, usually a worse one; to change sth to a more general or more simple form
reduce sb / sth (from sth) to sth / to doing sth
to force sb / sth into a particular state or condition, usually a worse one
a beautiful building reduced to rubble
reduce sth to sth
to change sth to a more general or more simple form
We can reduce the problem to two main issues.
Definitions from the Oxford Advanced Learner's Dictionary, 9th edition