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dyna-

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  1. a combining form meaning “power,” used in the formation of compound words: dynamotor.
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Also dynam-, dynamo-.

Origin of dyna-

combining form of Greek dýnamis power, dýnasthai to be able

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
British Dictionary definitions for dynam-

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
dynam- 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.