electron optics
noun
plural in form but singular in construction
: a branch of physics in which the principles of optics are applied to beams of electrons
electron-optical
i-ˌlek-ˌträn-ˈäp-ti-kəl 
adjective 
Word History
First Known Use
1916, in the meaning defined above
Medical Definition
electron optics
noun, plural in form but singular in construction
: a branch of physics in which the principles of optics are applied to beams of electrons
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