Source : Webster's Revised Unabridged Dictionary (1913)

Fluoroscope \Flu*or"o*scope\, n. (Physics)
   A fluorescent screen, with hood to protect the eyes, used for
   observing the shadows cast by objects placed in the path of
   the X rays. -- {Flu*or`o*scop"ic}, a.

Fluoroscope \Flu*or"o*scope\, n. [Fluorescence + -scope.]
   (Phys.)
   An instrument for observing or exhibiting fluorescence.

Source : WordNet®

fluoroscope
     n : an X-ray machine that combines an X-ray source and a
         fluorescent screen to enable direct observation [syn: {roentgenoscope}]