Douglas Harper's Etymology Dictionary
scrutinization
1772, noun of action from scrutinize.
Wiktionary
scrutinization
n. The act of scrutinize; scrutiny
Usage examples of "scrutinization".
He faced the opening of everything he had ever felt, decided, thought, to the scrutinization of strangers.
They stood in a group and looked up in awe at Eve’s scrutinization of one of their own.