1. The making of a solution of definite strength so that it may be used for comparison and in tests.
2. Making any drug or other preparation conform to the type or standard.
3. A set of techniques used to remove as far as possible the effects of differences in the age or other confounding variables when comparing two or more populations.
Standardization of a test, in psychology, the following of definite procedures for administering, scoring, evaluating, and reporting the results of a new test which is under development.