dy·na·mo

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

Origin:
1882; short for dynamoelectric

Dictionary.com Unabridged

dynamo-

variant of dyna-: dynamometer.
Also, dynam-.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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00:10
Dynamo is always a great word to know.
So is zedonk. Does it mean:
the offspring of a zebra and a donkey.
a gadget; dingus; thingumbob.
Collins
World English Dictionary
dynamo (ˈdaɪnəˌməʊ) [Click for IPA pronunciation guide]
 
n , pl -mos
1.  Compare generator a device for converting mechanical energy into electrical energy, esp one that produces direct current
2.  informal an energetic hard-working person
 
[C19: short for dynamoelectric machine]

dynamo- or (sometimes before a vowel) dynam-
 
combining form
indicating power: dynamoelectric; dynamite
 
[from Greek, from dunamis power]
 
dynam- or (sometimes before a vowel) dynam-
 
combining form
 
[from Greek, from dunamis power]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

dynamo
1882, short for Ger. dynamoelektrischemaschine, coined 1867 by its inventor, Ger. electrical engineer Werner Siemans (1816-92), from Gk. dynamis "power."
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

dynamo- pref.
force; energy: dynamogenesis.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
dynamo   (dī'nə-mō')  Pronunciation Key 
An electric generator, especially one that produces direct current. See more at generator.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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FOLDOC
Computing Dictionary

DYNAMO definition


DYNamic MOdels. A language for continuous simulation including economic, industrial and social systems, developed by Phyllis Fox and A.L. Pugh in 1959.
Versions include DYNAMO II, DYNAMO II/370, DYNAMO II/F, DYNAMO III and Gaming DYNAMO.
["DYNAMO User's Manual", A.L. Pugh, MIT Press 1976].

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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Example sentences
Do not become a dynamo of self-promotion on social media as so many advise.
The alarm increased when partial darkness resulted from repairs to the dynamo
  which were going on in the cellar.
Power carried by wire from a neighboring electric, switch set the wheels in
  this dynamo whirring.
The plan was to attach blades to the back axle of a bicycle and generate
  electricity through a bike dynamo.
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