请输入您要查询的英文单词:

 

单词 torus
释义

WordReference Random House Unabridged Dictionary of American English © 2024
to•rus  (tôrəs, tōr-),USA pronunciation n., pl. to•ri 
    (tôrī, tōrī).USA pronunciation 
  1. Archit. a large convex molding, more or less semicircular in profile, commonly forming the lowest molding of the base of a column, directly above the plinth, sometimes occurring as one of a pair separated by a scotia and fillets. See illus. at molding and column. 
  2. [Geom.]
    • a doughnut-shaped surface generated by the revolution of a conic, esp. a circle, about an exterior line lying in its plane.
    • the solid enclosed by such a surface.
  3. [Bot.]
    • the receptacle of a flower.
    • a thickening of the wall membrane in the bordered pits occurring in the tracheid cells of the wood of many conifers.
  4. [Anat.]a rounded ridge;
    a protuberant part.
  • Latin: literally, strand, thong, raised ridge
  • 1555–65

Collins Concise English Dictionary © HarperCollins Publishers::
torus /ˈtɔːrəs/ n ( pl -ri / -raɪ/)

  1. Also called: tore a large convex moulding approximately semicircular in cross section, esp one used on the base of a classical column
  2. a ring-shaped surface generated by rotating a circle about a coplanar line that does not intersect the circle. Area: 4π²Rr; volume: 2π²Rr², where r is the radius of the circle and R is the distance from the line to the centre of the circle
  3. another name for receptacle
Etymology: 16th Century: from Latin: a swelling, of obscure origin
随便看

 

英语词典包含188688条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。

 

Copyright © 2004-2022 Newdu.com All Rights Reserved
更新时间:2024/11/10 22:26:08