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scintilloscope

noun
scin·​til·​lo·​scope
variants: or less commonly scintilliscope \ sin‧ˈtiləˌskōp \

Definition of scintilloscope 

: a small instrument similar to the spinthariscope for exhibiting scintillations (as of a radioactive substance) on a sensitive screen

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First Known Use of scintilloscope

1904, in the meaning defined above

History and Etymology for scintilloscope

scintillo-, scintilli- (from Latin scintilla) + -scope

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The first known use of scintilloscope was in 1904

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