cyberspace

noun

cy·​ber·​space ˈsī-bər-ˌspās How to pronounce cyberspace (audio)
: the online world of computer networks and especially the Internet

Examples of cyberspace in a Sentence

We send e-mails through cyberspace.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The new announcement is based on Britain's Strategic Defence Review (SDR) 2025, which states that space is now a top-tier defense area, along with land, sea, air, and cyberspace, and needs to be protected to the same degree as the others. New Atlas, 13 Oct. 2025 In Legacy, Flynn gets lost within a version of cyberspace called The Grid; his son logs on to chase after him. David Sims, The Atlantic, 10 Oct. 2025 As if cybersecurity wasn’t challenging enough, fewer CISA employees are being asked to do more and more work protecting American cyberspace during the shutdown. Richard Forno, The Conversation, 7 Oct. 2025 Russia, China, Iran and North Korea are most commonly named as the main state actors threatening Western nations and their allies in cyberspace. Ellie Cook, MSNBC Newsweek, 3 Oct. 2025 See All Example Sentences for cyberspace

Word History

First Known Use

1982, in the meaning defined above

Time Traveler
The first known use of cyberspace was in 1982

Browse Nearby Words

Cite this Entry

“Cyberspace.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cyberspace. Accessed 18 Oct. 2025.

Kids Definition

cyberspace

noun
cy·​ber·​space ˈsī-bər-ˌspās How to pronounce cyberspace (audio)
: the online world of computer networks

More from Merriam-Webster on cyberspace

Last Updated: - Updated example sentences
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