Meaning of AMPLIFIER in English

AMPLIFIER

ˈ ̷ ̷ ̷ ̷ˌfī(ə)r, -īə noun

( -s )

: one that amplifies ; specifically : an electronic circuit usually employing vacuum tubes and used to obtain amplification of voltage, current, or power

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.