commissioning com·mis·sio·ning US/kʌˈmɪʃʌnɪŋ/ uncommon noun 1. the act of granting authority to undertake certain functions Synonymscommission Related words Word family commission Broader terms authorization Narrower terms mandate WordNet 2.1 (Princeton University). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved.