collisionless
Adjective
Meaning
(physics, of an interaction, or of the transfer of energy) That does not involve a collision between particles, bodies, plasmas or waves.
(computing theory) Without the possibility of data packets colliding on the network.
A token ring network is collisionless, but an Ethernet network is not.
(computing theory) Without the possibility of items having the same value, which would prevent reliable lookup.
a collisionless hash
Examples
The most important difference is that in the absence of field line breaking, the magnetic field is tied to the electrons and not to the bulk fluid. citation ; Collisionless : MHD is also often used for collisionless plasmas.
The structure of the cosmic microwave background anisotropies is principally determined by two effects: acoustic oscillations and diffusion damping (also called collisionless damping or Silk damping).