noun Physics, Chemistry.
Origin of proton
Related formspro·ton·ic, adjective
Examples from the Web for protonic
Arcot threw out his protonic shield, and retreated to half a million miles, as he had said.
Then it was over, and the skies were clear once more as Arcot lowered the protonic screen silently.
And the six smaller machines, which Arcot had succeeded in interconnecting with the protonic generator, were whining too.