1. a person or thing that normalizes.
  2. Mathematics.
    1. the subgroup consisting of elements that commute with a given element.
    2. the set of elements of a group that commute with every element of a given subgroup.

Origin of normalizer

First recorded in 1925–30; normalize + -er1 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018