conchoid
/'kɔŋkɔid/
📖 中文释义
- n. 蚌线
🧩 词形变化
复数 conchoids
📘 English Definition（英文释义）
- n. A curve, of the fourth degree, first made use of by the
- Greek geometer, Nicomedes, who invented it for the purpose of
- trisecting an angle and duplicating the cube.