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photomultiplier: Meaning and Definition of
pho•to•mul•ti•pli•er
Pronunciation: (fō"tu-mul'tu-plī"ur), [key]
— n.
- an extremely sensitive detector of light and of other radiation, consisting of a tube in which the electrons released by radiation striking a photocathode are accelerated, greatly amplifying the signal obtainable from small quantities of radiation.
