/ Thesaurus / D Synonyms of diagnostic procedure Find synonyms for: Noun1. diagnostic procedure, diagnostic technique, procedure, processusage: a procedure followed in making a medical diagnosisWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: heifer Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language