selenodont
/sɪˈliːnədɒnt/adjective
1- Zoology (of molar teeth) having crescent-shaped ridges on the grinding surfaces, characteristic of the ruminants【动】（反刍动物特有的臼齿）月牙形的, 月型齿的。
1.1
- (of an ungulate) having such teeth（有蹄动物）有月型齿的。
词源
late 19th cent.: from seleno- 'moon-shaped' + Greek odous, odont- 'tooth'.