Definition of mastodon in English:

mastodon

Syllabification: mas·to·don
Pronunciation: /ˈmastəˌdän
 
/

noun

A large, extinct, elephantlike mammal of the Miocene to Pleistocene epochs, having teeth of a relatively primitive form and number.
More 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.

Origin

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:

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day deictic
Pronunciation: ˈdīktik
adjective
denoting a word whose meaning depends on context...