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[ih-lek-troh] /ɪˈlɛk troʊ/
noun, plural electros.
Origin of electro
by shortening


a combining form representing electric, or electricity, in compound words:
Also, especially before a vowel, electr-.
Origin Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for electro
  • electro-mechanically controlled molecules in the fibers could change the shape of a garment with the tap of a button.
  • Our thoughts are electro-chemical reactions to stimuli that, in turn, cause other thoughts and reactions.
  • It has concentrated its development of electro-optical imaging systems towards optimizing both the spatial and spectral domain.
  • Scientists use electro-fishing equipment for various purposes.
  • Songs are influenced by electro beats designed for club play.
British Dictionary definitions for electro


noun (pl) -tros


combining form
electric or electrically: electrocardiograph, electrocute
electrolytic: electroanalysis
Word Origin
from New Latin, from Latin ēlectrum amber, from Greek ēlektron
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
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Word Origin and History for electro


before vowels electr-, word-forming element meaning "electrical, electricity," Latinized form of Greek elektro-, comb. form of elektron "amber" (see electric).

Online Etymology Dictionary, © 2010 Douglas Harper
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electro in Medicine

electro- or electr-

  1. Electricity; electric; electrically: electrocautery.

  2. Electron: electronegative.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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