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photo story
photoactinic
photoactive
photoautotroph
photobiology
photobiotic
photoblastic
photocall
photocatalysis
photocathode
photocell
photochemical
photochemical smog
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photofission
pho·to·fis·sion [ ftō físh'n ] (plural pho·to·fis·sions)


noun 
Definition:
 
gamma radiation induced fission: nuclear fission induced by gamma rays
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