Wiktionary
n. (context science fiction English) mental powers that affect physical matter, such as telekinesis.
Wikipedia
Psionics is the study of paranormal phenomena in relation to the application of electronics. The term comes from psi ('psyche') and the -onics from electronics (machine). It is closely related to the field of radionics. There is no scientific evidence that psionic abilities exist.
In the Dungeons & Dragons fantasy role-playing game, Psionics are a form of supernatural power that are similar to, but distinct from, arcane and divine magic.
Psionics, in role-playing games, is a broad category of fantastic abilities originating from the mind, similar to the paranormal psionic abilities that some people claim in reality.
Usage examples of "psionics".
At the very least, it can lead to stories that are filled with jargon such as space warp, psionics, antigravs, droids and such.
FTA offered me a chance to do real psionics research, to actually help psions in a way no one had been able to before.