pseudoscience

noun

pseu·​do·​sci·​ence ˌsü-dō-ˈsī-ən(t)s How to pronounce pseudoscience (audio)
: a system of theories, assumptions, and methods erroneously regarded as scientific
pseudoscientific adjective
pseudoscientist noun

Examples of pseudoscience in a Sentence

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.
Others have no relevant credentials, and frequently disseminate pseudoscience. Theresa Gaffney, STAT, 27 Jan. 2026 Scientists dismiss it as pseudoscience. Shaw Walters, Forbes.com, 23 Jan. 2026 Acupuncture is considered a pseudoscience, as there is little scientific evidence to support the validity of its effects. Bestreviews, Mercury News, 21 Jan. 2026 Her father ran a construction company, Taylor Commercial, and dabbled in pseudoscience. Charles Bethea, New Yorker, 5 Jan. 2026 See All Example Sentences for pseudoscience

Word History

First Known Use

1796, in the meaning defined above

Time Traveler
The first known use of pseudoscience was in 1796

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Cite this Entry

“Pseudoscience.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pseudoscience. Accessed 1 Feb. 2026.

Medical Definition

pseudoscience

noun
pseu·​do·​sci·​ence ˌsüd-ō-ˈsī-ən(t)s How to pronounce pseudoscience (audio)
: a system of theories, assumptions, and methods erroneously regarded as scientific
pseudoscientific adjective
Last Updated: - Updated example sentences
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