[ foh-tuh-fish-uh n, foh-tuh-fish- ]
/ ˌfoʊ təˈfɪʃ ən, ˈfoʊ təˌfɪʃ- /

noun Physics.

nuclear fission induced by the absorption of a high-energy photon.


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Origin of photofission

First recorded in 1935–40; photo- + fission Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020