| 单词 | trituberculism |
| 释义 | > as lemmastrituˈberculism trituˈberculism n. the condition of being tritubercular, or the presence of tritubercular teeth. ΘΚΠ the world > animals > animal body > general parts > head and neck > [noun] > mouth > tooth or tusk > having tritubercular teeth trituberculy1888 trituberculism1890 1890 Nature 20 Mar. 466/2 It appears probable..that ‘trituberculism’, as this type of tooth-structure may be conveniently termed, was developed from a simple cone-like tooth during the Mesozoic period. 1891 W. H. Flower & R. Lydekker Introd. Study Mammals ii. 32 We also find trituberculism differentiating into a secodont and a bunodont series. < as lemmas |
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