Mastodon meaning

-dŏnt
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Any of several very large, extinct proboscidian mammals of the family Mammutidae of the Miocene, Pliocene, and Pleistocene Epochs, resembling elephants but having molar teeth of a different structure.
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Any of an extinct family (Mastodontidae) of proboscidean mammals larger than the elephants and having a different structure of the molars.
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Any of several extinct mammals of the genus Mastodon (or Mammut ). Mastodons resembled elephants and mammoths except that their molar teeth had conelike cusps rather than parallel ridges for grinding. Like elephants, mastodons had a pair of long, curved tusks growing from their upper jaw, but males also sometimes had a second pair from the lower jaw. Like mammoths, mastodons were covered with hair. They lived from the Oligocene Epoch to the end of the Ice Age.
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Extinct elephant-like mammal of the genus Mammut that flourished worldwide from Miocene through Pleistocene times; differs from elephants and mammoths in the form of the molar teeth.
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A nickname for both the 4-8-0 and (though incorrectly) the 4-10-0 train configurations.
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Origin of mastodon

  • New Latin Mastodōn genus name Greek mastos breast, nipple Greek odōn tooth (from the nipple-shaped protrusions on the crowns of its molars) dent- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • First attested 1813, from the New Latin genus name Mastodon (1806), coined by Georges Cuvier, from Ancient Greek μαστός (mastos, “breast") + ὀδούς (odous, “tooth"), from the similarity of the mammilloid projections on the crowns of the extinct mammal's molars.

    From Wiktionary