名詞 mastodon:

1. extinct elephant-like mammal that flourished worldwide from Miocene through Pleistocene times; differ from mammoths in the form of the molar teeth
   同義詞：mastodont

mas.to.don

n.（名詞）
Any of several very large, extinct proboscidian mammals of the genusMammut (sometimes Mastodon ), resembling the elephant but having molar teeth of a different structure.
乳齒象：美洲乳齒象 屬（有時(shí)為 乳齒象 )的幾種已滅絕的高大、長(zhǎng)鼻的哺乳動(dòng)物，與大象外形相似，但臼齒結(jié)構(gòu)不同

來(lái)源：
New Latin Mastodôn [genus name]
現(xiàn)代拉丁語(yǔ) Mastodôn [屬名]
Greek mastos [nipple]
希臘語(yǔ) mastos [乳頭]
Greek odôn odont- [tooth] * see dent-
希臘語(yǔ) odôn odont- [牙齒] *參見(jiàn) dent-

【引伸】
mas.todon.ic
adj.（形容詞）