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hodoscope

Syllabification: (ho·do·scope)

Pronunciation: /ˈhädəˌskōp/

Definition of hodoscope

noun

Physics

an instrument for observing the paths of subatomic particles, especially those arising from cosmic rays.

Origin:

early 20th century (denoting a microscope for examination of light paths in crystals): from Greek hodos 'way' + -scope. The current sense dates from the 1950s