amplifier

from WordNet (r) 3.0 (2006)

amplifier
    n 1: electronic equipment that increases strength of signals
         passing through it

from The Collaborative International Dictionary of English v.0.48

Amplifier \Am"pli*fi`er\, n.
   One who or that which amplifies.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

46 Moby Thesaurus words for "amplifier":
      attenuator, audio-frequency tube, ballast regulator, ballast tube,
      beam-switching tube, convertor, current regulator, damper,
      detector, discriminator, doubler, ear trumpet,
      electronic hearing aid, focus tube, generator, hard-of-hearing aid,
      hearing aid, iconoscope, inverter, limiter, local-oscillator tube,
      megaphone, mixer tube, modulator, multiplier, multipurpose tube,
      multivibrator, oscillator, output tube, phase inverter,
      picture tube, power tube, preamp, preamplifier, pulse generator,
      radio-frequency tube, receiving tube, rectifier tube, regulator,
      repeater, speaking trumpet, stethoscope, transducer,
      transistor hearing aid, trigger tube, vacuum-tube hearing aid

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