(noun.) a line generated by a point on a circle rolling along a straight line.
(adj.) resembling a circle .
尤因整理
双语例句
In the first course, there was a shoulder of mutton cut into an equilateral triangle, a piece of beef into a rhomboides, and a pudding into a cycloid. 乔纳森·斯威夫特.格列佛游记.