preamplifier

[ pree-am-pluh-fahy-er ]

/ priˈæm pləˌfaɪ ər /

noun

a device in the amplifier circuit of a radio or phonograph that increases the strength of a weak signal for detection and further amplification.

Nearby words

prealtar, prealternate molt, preamble, preamble to the constitution, preamp, preamplifier, preanesthetic, preantiseptic, preappoint, prearrange, prearranged

Origin of preamplifier

First recorded in 1930–35; pre- + amplifier

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for preamplifier

preamplifier

/ (priːˈæmplɪˌfaɪə) /

noun

an electronic amplifier used to improve the signal-to-noise ratio of an electronic device. It boosts a low-level signal to an intermediate level before it is transmitted to the main amplifierSometimes shortened to: preamp

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for preamplifier

preamplifier

1929, from pre- + amplifier. Shortened form pre-amp is attested from 1957.