[pho.to.mul.ti.pli.er tube] n (1941): a vacuum tube that detects light esp. from dim sources through the use of photoemission and successive instances of secondary emission to produce enough electrons to generate a useful current--called also photomultiplier
PHOTOMULTIPLIER TUBE
Meaning of PHOTOMULTIPLIER TUBE in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012