photonuclear

[foh-toh-noo-klee-er, -nyoo- or, by metathesis, -kyuh-ler]

pho·to·nu·cle·ar

[foh-toh-noo-klee-er, -nyoo- or, by metathesis, -kyuh-ler]
adjective Physics.
of, pertaining to, or caused by the collision of high-energy photons with the nucleus of an atom.

Origin:
1940–45; photo- + nuclear


See nuclear.

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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Photonuclear has a plethora of syllables.
So is supercalifragilisticexpialidocious. Does it mean:
(used as a nonsense word by children to express approval or to represent the longest word in English.)
a white, crystalline, water-insoluble solid, C14H9Cl5, usually derived from chloral by reaction with chlorobenzene in the presence of fuming sulfuric acid: used as an insecticide and as a scabicide and pediculicide: agricultural use prohibited in the U.S.
Collins
World English Dictionary
photonuclear (ˌfəʊtəʊˈnjuːklɪə)
 
adj
physics of or concerned with a nuclear reaction caused by a photon

Collins English Dictionary - Complete & Unabridged 10th Edition
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