English Dictionary

ball-and-socket joint

名詞

A joint in which one segment has a rounded end and the next segment has a bowl-shaped end, with the rounded end being fitted into the bowl shape, allowing the first segment to move around an indefinite number of axes which have one common center.

日本語の意味

球関節 — 一方の部分が丸い球状の先端を持ち、もう一方の部分がくぼんだソケット状の形状になっており、球状の先端がソケットに嵌め込まれることで、一つの共通点を中心として複数の軸上で自由に回転運動が可能な関節。

The shoulder functions as a ball-and-socket joint, allowing the arm to rotate in almost any direction.

肩は球関節として機能し、腕がほとんどあらゆる方向に回転できるようにします。

意味（1）

A joint in which one segment has a rounded end and the next segment has a bowl-shaped end, with the rounded end being fitted into the bowl shape, allowing the first segment to move around an indefinite number of axes which have one common center.

ball-and-socket joints （ plural ）