collider

noun

Etymology: Etymology tree English collide Proto-Indo-European *-yósder. Proto-Italic *-āzijos Latin -āriusnom. Latin -āriusbor. Proto-Germanic *-ārijaz Proto-West Germanic *-ārī Old English -ere Middle English -ere English -er English collider From collide + -er.

1. Any of several forms of particle accelerator in which two opposing beams of particles collide.
2. A node in a causal graph that has at least two incoming edges.
3. A model of the shape of an object for purposes of collision detection.

   “The race controller will check for a trigger hit between this player's collider and the start/finish line trigger, but this script has an OnTriggerEnter function to check for triggers used to force a respawn.”