Averell Harriman ave·rell·har·riman uncommon noun 1. United States financier who negotiated a treaty with the Soviet Union banning tests of nuclear weapons (1891-1986) SynonymsHarrimanAverell HarrimanWilliam Averell Harriman Related words Broader terms financierdiplomat WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
