(ˌfəʊtəʊˈfɪʃən) n (General Physics) physics the simultaneous release of energy and splitting of a large nucleus into smaller ones, caused by the absorption of a high energy photon
photofission
photofission
[¦fōd·ō′fish·ən] (nuclear physics) Fission of an atomic nucleus that results from absorption by the nucleus of a high-energy photon.