from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Having an energy greater than that associated with a comparable entity generated by thermal excitation
Sorry, no etymologies found.
The figure illustrates a newly recognized phenomenon in the ACE SWEPAM suprathermal electron data – depletions of halo electrons centered on and roughly symmetric about 90° pitch angle PA relative to the heliospheric magnetic field.
What had not yet been shown, nor apparently considered, was that heavy molecules could be accelerated to suprathermal translational energies by expansion of a light carrier gas such as hydrogen or helium in which those heavy molecules were present a low levels.
"A suprathermal ion detector to measure the mass and energy of any gases on or near the lunar surface.