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单词 trigonid
释义

trigonid

英汉-汉英词典
n. 下三角座,下三尖,下臼齿三尖
词组 | 习惯用语
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  • trigonal adj. 三角形的;三角的;三方晶系的
  • Trinidad n. 特立尼达拉岛
  • nonrigid adj. 非刚性的
  • trigging v. 触发;修饰;制止(车轮等的)滚动(trig的ing形式)

网络短语:
trigonid 三角座; 下三角座; 三角形下臼齿;
英语百科

Molar (tooth)

Comparison of cheek teeth in various taxa: 1, Reptile; 2, Dromatherium (a Triassic Cynodont); 3, Microconodon (a Triassic Eucynodont); 4, Spalacotherium (a Cretaceous Symmetrodont); 5, Amphitherium (a Jurassic mammal).
Generalized cusp of a mammalian molar. ant, anterior; pos, posterior; ci, lingual cingulum; pa, paraconid; pr, protoconid; me, metaconid; hy, hypoconid; hl, hypoconulid; ec, entocristid; tb, talonid basin

The molars or molar teeth are large, flat teeth at the back of the mouth. They are more developed in mammals. They are used primarily to grind food during chewing. The name molar derives from Latin, molaris dens, meaning "millstone tooth", from "mola", millstone and dens, tooth. Molars show a great deal of diversity in size and shape across mammal groups.

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更新时间:2025/6/22 14:23:43