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dynamo

[dahy-nuh-moh]
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noun, plural dy·na·mos.
  1. an electric generator, especially for direct current.
  2. an energetic, hardworking, forceful person.
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Origin of dynamo

First recorded in 1882; short for dynamoelectric

dynamo-

  1. variant of dyna-: dynamometer.
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Also dynam-.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for dynamo

Contemporary Examples

Historical Examples

  • His researches on the dynamo caused him to devise what he calls an 'harmonic engine.'

  • Here were the principles of the telegraph relay and the dynamo.

    The Age of Invention

    Holland Thompson

  • The product of the mechanical motion is electricity in the dynamo.

    The Machinery of the Universe

    Amos Emerson Dolbear

  • The ground carries the electricity back to the dynamo just as a wire would.

    Common Science

    Carleton W. Washburne

  • But no dynamo ever invented has the power that is centered in the dynamic will of a human being.


British Dictionary definitions for dynamo

dynamo

noun plural -mos
  1. a device for converting mechanical energy into electrical energy, esp one that produces direct currentCompare generator (def. 1)
  2. informal an energetic hard-working person
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Word Origin

C19: short for dynamoelectric machine

dynamo-

sometimes before a vowel dynam-

combining form
  1. indicating powerdynamoelectric; dynamite
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Word Origin

from Greek, from dunamis power
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 dynamo

n.

1882, short for dynamo-machine, from German dynamoelektrischemaschine "dynamo-electric machine," coined 1867 by its inventor, German electrical engineer Werner Siemans (1816-1892), from Greek dynamis "power."

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Online Etymology Dictionary, © 2010 Douglas Harper

dynamo in Medicine

dynamo-

pref.
  1. Force; energy:dynamogenesis.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

dynamo in Science

dynamo

[dīnə-mō′]
  1. An electric generator, especially one that produces direct current. See more at generator.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.