torus
/ˈtɔːrəs/noun
(pl. tori /ˈtɔːraɪ/ 或toruses)
1
- Geometry a surface or solid formed by rotating a closed curve, especially a circle, about a line which lies in the same plane but does not intersect it (e.g. like a ring doughnut)【几何】环形圆纹曲面, 环面, 锚环。
1.1
- a thing of this shape, especially a large ring-shaped chamber used in physical research环形物（尤指开展物理研究的大型环形室）。
2
- Architecture a large convex moulding, typically semicircular in cross section, especially as the lowest part of the base of a column【建筑】环状半圆线脚装饰; 柱脚圆盘线脚。
3
- Anatomy a ridge of bone or muscle【剖】隆凸, 圆枕：
the maxillary torus.
上颌隆凸。
4
- Botany the receptacle of a flower【植】花托。
词源
mid 16th cent. (in sense 2)： from Latin, literally 'swelling, bolster, round moulding'. The other senses date from the 19th cent.