mastodon noun. ['mastǝdɒn] E19.
[from Greek mastos breast + -ODON.]
Palaeontology. A large extinct mammal of the genus Mammut, resembling the elephant but having nipple-shaped tubercles in pairs on the crowns of the molar teeth.

■ masto'donic adjective (rare) = mastodontic M19.

■ masto'dontic adjective of or pertaining to a mastodon; resembling the mastodon: M19.

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