Nadion
A nadion is an artificially-generated particle. Among other uses, phasers and disruptors produced nadions when they were fired.

Nadion radiation accelerated the development of Tuvan Syndrome. () 

During the Occupation of Bajor, Doctor Crell Moset exposed Tabor's grandfather to nadion radiation as part of his medical experiments. It took six days for Moset's victim to die. ()

In 2367, a tactical star map of the battle between the  and a Cardassian warship indicated that the latter's disruptors had a rapid nadion effect of 340 KHz. (, remastered)

In 2367, a particle pulse analyzed by Data and Geordi La Forge while verifying the origin of a type-III phaser rifle was later determined to be Romulan in origin. ()

In an alternate 2371, Captain Janeway closed a subspace fracture with a phaser. The following day,  Torres registered a nadion particle resistance that was preventing her from opening that fracture any further, stopping it from intersecting with a polaric conduit wall. ()

In 2374, Tuvok tried to use nadion bursts to disperse the pool of Silver Blood that was threatening to sink . ()

In late 2375, Dr. Bashir suggested using nadion bursts to slow the progress of Odo's disease. ()

The Bussard collectors on an  starship did not produce nadion emissions. ()

In mid-2378, Tuvok detected nadion bursts with Klingon signatures on the opposite end of a temporal rift. ()

See also
Nadion pulse
Nadion emitter
Rapid nadion pulse

External link 

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Particles