simple past tense and past participle of standardize
"The new testing program was standardized to ensure fair results across all schools."
In plain English: To make something standardized is to change it so that everything follows the same rules and looks exactly alike.
"The company standardized its safety procedures to ensure every employee followed the same rules."
capable of replacing or changing places with something else; permitting mutual substitution without loss of function or suitability
"interchangeable electric outlets"
"interchangeable parts"
designed or constructed in a standard manner or according to an official standard
"The new factory produces all its car parts using standardized methods to ensure every component fits perfectly."
In plain English: Standardized means following an exact set of rules so that everything is done the same way every time.
"The new testing system uses standardized questions for all students across the country."
Usage: Use standardized when describing products, tests, or procedures that have been made uniform to meet specific rules. This term often contrasts with custom-made items and implies consistency rather than just being "normal."