Meaning of photonuclear

pho•to•nu•cle•ar

Pronunciation: (fō"tō-n'klē-ur, -ny'- or, by metathesis, -kyu-lur), [key]
— adj. Physics.
  1. of, pertaining to, or caused by the collision of high-energy photons with the nucleus of an atom.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.