See more synonyms for amp on

Origin of amp

First recorded in 1885–90; by shortening


verb (used with object)
  1. to excite or energize (usually followed by up): We were so amped up for the game that we forgot to eat.

Origin of amp

First recorded in 1960–65; by shortening


noun Slang.
  1. amputation.
  2. amputee.

Origin of amp

by shortening


  1. a white, crystalline, water-soluble nucleotide, C10H12N5O3H2PO4, obtained by the partial hydrolysis of ATP or of ribonucleic acid, yielding on hydrolysis adenine, ribose, and orthophosphoric acid.

Origin of AMP

1950–55; a(denosine) m(ono) p(hosphate)


  1. amperage.
  2. ampere; amperes. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for amp

loudspeaker, amp

Examples from the Web for amp

Contemporary Examples of amp

Historical Examples of amp

  • The amp, speakers, and A/V switcher were all missing from her home theater.


    Cory Doctorow

  • AMP life was pleasant, aside from the perpetual drilling, marching and countermarching.

  • The annexed figures of this hitherto undefined species will clearly show its distinction from Amp.

  • He was certain his shout overmodulated every amp tube in the entire World City viewer system.

    Brink of Madness

    Walter J. Sheldon

  • Us Goshen people kind o' kept together when we set down in the amp'itheater.

    Aunt Jane of Kentucky

    Eliza Calvert Hall

British Dictionary definitions for amp


  1. an ampere
  2. informal an amplifier
  1. Australian informal to excite or become excited
See also amp up


abbreviation for
  1. adenosine monophosphate
  2. Australian Mutual Provident Society


abbreviation for
  1. ampere
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 amp

1886 as an abbreviation of ampere; 1967 as an abbreviation of amplifier.

Online Etymology Dictionary, © 2010 Douglas Harper

amp in Medicine


  1. Adenosine monophosphate; a mononucleotide found in animal cells and reversibly convertible to ADP and ATP.adenine nucleotide adenylic acid
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

amp in Science


  1. Short for adenosine monophosphate. An organic compound that is composed of adenosine and one phosphate group. It is one of the nucleotides present in DNA and RNA, and is also the fundamental component of ATP and ADP. During certain cellular metabolic processes, AMP forms from ADP when the latter loses a phosphate group, and AMP forms ADP by acquiring a phosphate group. Chemical formula: C10H14N5O7P.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

amp in Culture



A unit of electric current (see also current). One ampere corresponds to a certain number of electrons passing a fixed point each second.


A typical household's electrical supply includes a total of 120 to 200 amps; a typical house circuit carries 15 to 50 amps.
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.