Share this entry
mastodon Line breaks: mas|to¦don
Pronunciation: /ˈmastədɒn/

Definition of mastodon in English:


Image of mastodon
A large extinct elephant-like mammal of the Miocene to Pleistocene epochs, having teeth of a relatively primitive form and number.
  • Mammutidae and other families, order Proboscidea: many species
Example sentences
  • All too often books written for a popular audience include animals such as mammoths, mastodons, plesiosaurs, ichthyosaurs, and the sail-backed Dimetrodon.
  • Geologists say it probably once belonged to a woolly mammoth or a mastodon.
  • In lower latitudes, mastodons and elephants, giant deer and ox, beavers, dogs and cats, and other familiar species existed in the forests and grasslands.


Pronunciation: /mastəˈdɒntɪk/
Example sentences
  • Then the really terrifying thought struck me: are acts of such atrocity the only way to get rid of mastodontic eyesores like these?


Early 19th century: modern Latin, from Greek mastos 'breast' + odous, odont- 'tooth' (with reference to nipple-shaped tubercles on the crowns of its molar teeth).

Definition of mastodon in:
Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Subscribe to remove ads and access premium resources