/ Thesaurus / J Synonyms of john macleod Find synonyms for: Noun1. Macleod, John Macleod, John James Rickard Macleodusage: Scottish physiologist who directed the research by F. G. Banting and C. H. Best that led to the discovery of insulin (1876-1935)WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language