Definition of mastodon in English:

mastodon

Line breaks: mas|to¦don
Pronunciation: /ˈmastədɒn
 
/

noun

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
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).

Derivatives

mastodontic

Pronunciation: /-ˈdɒntɪk/
adjective
More 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?

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