[ sahy-ber ]
See synonyms for cyber on
  1. (used alone as a substitute for many compound words that begin with the combining form cyber-, as cyberattack, cybersecurity, cyberterrorism, or cyberwarfare): GPS may be vulnerable to jamming and cyber.Ethical hackers are being recruited for careers in cyber.

  1. of or relating to computers, typically to one of the technology domains named with the combining form cyber-, as cyberterrorism, cyberwarfare, or cyberattack: a cyber threat;several cyber breaches;cyber operations;cyber plots.

verb (used without object)
  1. to engage in cybersex: People playing the MMO were cybering in voice chat, sometimes without even creating a separate channel to keep it private.

Origin of cyber

First recorded in1990–95; from cyber-

Words Nearby cyber

Other definitions for cyber- (2 of 2)


Digital Technology.
  1. a combining form meaning “computer,” “computer network,” or “virtual reality,” used in the formation of compound words (cybertalk; cyberart; cyberspace) and by extension meaning “expressing visions of the future” (cyberfashion).

Origin of cyber-

Extracted from cybernetics

word story For cyber-

See internet. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use cyber in a sentence

British Dictionary definitions for cyber-


combining form
  1. indicating computers: cyberphobia

Origin of cyber-

C20: back formation from cybernetics

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

Scientific definitions for cyber-


  1. A prefix that means “computer” or “computer network,” as in cyberspace, the electronic medium in which online communication takes place.

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.