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photofission

[foh-tuh-fish-uh n, foh-tuh-fish-]
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noun Physics.
  1. 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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018