1. A genus of huge paehydermatous animals, resembling the elephant, now extinct.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• mastidon,
• maston,
• mastadons,
• mastson,
• mastadon,
• chetodon,
• malodon,
• mastodin,
• mastoddon,
• mastodoon,
• mastodonn,
• mastodony,
• mastlun,
• mastodyna,
• mastodynny,
• mastolgy,
• Mysboden,
• mantoon,
• Masturson,
• vasothon

• mastoid,
• masted,
• mastodont,
• mastitis.

The adjective form of the word "mastodon" is "mastodontic".

The plural of the "mastodon" can be the "mastodons".

The singular of the "mastodon" can be the "mastodon".