(k&-lizh´&n di-tekt´shin) (n.)
(1) In networks, the process by which a node determines that a collision has occurred. Collisions occur with most networks, so a protocol is required to recover from such events. Ethernet uses CSMA/CD as its collision detection and recovery system.
(2) In virtual reality environments, collision detection is a program interface that determines how close a user is to a real physical objects and will stop their movement before colliding with the object.