noun
Technical term used in geometry, physics, and formal contexts to describe two objects or surfaces touching or being in contact. Not common in everyday conversation.
二つの円が相接する点を接点という。
The point where two circles touch is called the point of contact.
相接する二つの球の中心間距離は半径の和に等しい。
The distance between the centers of two touching spheres equals the sum of their radii.