torus

torus
[?t??r?s]
(pl. tori -r?? 或 toruses)

(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)
(幾何)環(huán)形圓紋曲面，環(huán)面，錨環(huán)
■a thing of this shape , especially a large ring-shaped chamber used in physical research
環(huán)形物（尤指開(kāi)展物理研究的大型環(huán)形室）
(Architecture)a large convex moulding, typically semicircular in cross section, especially as the lowest part of the base of a column
(建筑)環(huán)狀半圓線(xiàn)腳裝飾；柱腳圓盤(pán)線(xiàn)腳
(Anatomy)a ridge of bone or muscle
(剖)隆凸，圓枕
the maxillary torus.
上頜隆凸。
(Botany)the receptacle of a flower
(植)花托

語(yǔ)源

mid 16th cent. (in sense 2): from Latin, literally swelling, bolster, round moulding'. The other senses date from the 19th cent

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