amplifier

Từ điển WordNet v3.1 - WordNet Dictionary

noun

electronic equipment that increases strength of signals passing through it (Freq. 1)
• Derivationally related forms:
amplify
• Hypernyms:
electronic equipment
• Hyponyms:
audio amplifier, booster, booster amplifier, booster station, relay link,
relay station, relay transmitter, maser
• Part Holonyms:
radio receiver, receiving set, radio set, radio, tuner,
wireless, stereo, stereophony, stereo system, stereophonic system, public address system,
P.A. system, PA system, P.A., PA