a combining form representing electric or electricity in compound words: electromagnetic.
Also especially before a vowel, electr-.

Origin of electro-

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for electro-


sometimes before a vowel electr-

combining form

electric or electricallyelectrocardiograph; electrocute

Word Origin for electro-

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

Medical definitions for electro-



Electricity; electric; electrically:electrocautery.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.