American mastodont ame·ri·can·mastodont uncommon noun 1. North American mastodon; in some classifications considered a mammoth rather than a mastodon SynonymsAmerican mastodonAmerican mastodontMammut americanum Related words Broader terms mastodon Parts Mammut WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
