pseu·​do·​sci·​ence | \ˌsü-dō-ˈsī-ən(t)s \

Definition of pseudoscience 

: a system of theories, assumptions, and methods erroneously regarded as scientific

Keep scrolling for more

Other Words from pseudoscience

pseudoscientific \ˌsü-​dō-​ˌsī-​ən-​ˈti-​fik \ adjective
pseudoscientist \ˌsü-​dō-​ˈsī-​ən-​tist \ noun

Examples of pseudoscience in a Sentence

Recent Examples on the Web

The concept of white supremacy was legitimized during the 18th century through pseudoscience that sought to prove the inherent inferiority of black genetics. Kim Reynolds, Teen Vogue, "How White People Have Reacted to Black Success Over Time in the United States," 30 July 2018 Using genetics to determine metabolic predispositions may sound like pseudoscience, but the research is there. Jancee Dunn, Vogue, "The Future of Dieting Is Here—And it Has Nothing to do With Calorie Counting," 29 Oct. 2018 As Price writes: Cold fusion is dismissed as pseudoscience, the kind of thing that respectable scientists and science journalists simply don't talk about (unless to remind us of its disgrace). Jay Bennett, Popular Mechanics, "Can Cold Fusion Come Back From the Dead?," 21 Dec. 2015 Ultimately, pseudoscience was used to justify the torture and murder of millions. Erin Blakemore, Washington Post, "Holocaust Museum shows how Nazi theories affected 12 survivors," 1 July 2018 Even a convincing pseudoscience parody would have its cover blown coming from an official McGill account. Brian Barrett, WIRED, "A ‘Cancer Cure’ Video Skewered Bad Science—and Went Viral Itself," 10 July 2018 Unlike many of the industry’s other plainspoken deflaters of hype and pseudoscience, Suennen is generally careful not to publicly call out specific companies or entrepreneurs. Rebecca Robbins, STAT, "The gatekeeper: If you want to make it big in health care, it’ll help to get past Lisa Suennen first," 6 June 2018 Luckily, acclaimed science writer Carl Zimmer is here to unravel the tangled history of the science and pseudoscience surrounding heredity, in all its many forms. Megan Molteni, WIRED, "Maybe DNA Can’t Answer All Our Questions About Heredity," 28 May 2018 These claims are rough approximations of the golden ratio at best and pseudoscience at worst. Jay Bennett, Popular Mechanics, "The Mysteries of the Golden Ratio Explained by Math and Sunflowers," 11 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'pseudoscience.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of pseudoscience

1796, in the meaning defined above

Keep scrolling for more

Learn More about pseudoscience

Share pseudoscience

Statistics for pseudoscience

Last Updated

27 Nov 2018

Look-up Popularity

Time Traveler for pseudoscience

The first known use of pseudoscience was in 1796

See more words from the same year

Keep scrolling for more

More Definitions for pseudoscience


pseu·​do·​sci·​ence | \ˌsüd-ō-ˈsī-ən(t)s \

Medical Definition of pseudoscience 

: a system of theories, assumptions, and methods erroneously regarded as scientific

Other Words from pseudoscience

pseudoscientific \-​ˌsī-​ən-​ˈtif-​ik \ adjective

Comments on pseudoscience

What made you want to look up pseudoscience? Please tell us where you read or heard it (including the quote, if possible).


a nest or breeding place

Get Word of the Day daily email!

Test Your Vocabulary

Late Autumn 2018 Words of the Day Quiz

  • frosted-autumn-leaves
  • Which is a synonym of yahoo?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!


Test Your Knowledge - and learn some interesting things along the way.


Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!