tachy·​on ˈta-kē-ˌän How to pronounce tachyon (audio)
: a hypothetical particle held to travel faster than light

Examples of tachyon in a Sentence

Recent Examples on the Web The introduction of supersymmetry also solved the nasty problem of tachyons by replacing those troublesome particles with supersymmetric partners, which was a nice flourish. Paul Sutter, Ars Technica, 27 Jan. 2023 Unfortunately, this proto-string theory made incorrect predictions about the nature of the strong force and also had a variety of troublesome artifacts (like the existence of tachyons, particles that only traveled faster than light). Paul Sutter, Ars Technica, 27 Jan. 2023 At first glance, tachyons wouldn’t cause much trouble. Paul M. Sutter, Discover Magazine, 21 Feb. 2023 The tachyon particle has an intriguing time travel component. Tim Newcomb, Popular Mechanics, 21 Feb. 2023 Yes, there is a hypothetical particle, called the tachyon, that could travel back in time. Paul M. Sutter, Discover Magazine, 21 Feb. 2023 This predicts that every particle has a superpartner and, by an extraordinary coincidence, the same condition actually eliminates the tachyon. Lorenzo Bianchi, Newsweek, 19 Mar. 2018

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'tachyon.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


tachy- + -on entry 2

First Known Use

1967, in the meaning defined above

Time Traveler
The first known use of tachyon was in 1967

Dictionary Entries Near tachyon

Cite this Entry

“Tachyon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tachyon. Accessed 29 May. 2024.

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