[ soo-doh-sahy-uhns ]

  1. any of various methods, theories, or systems, as astrology, psychokinesis, or clairvoyance, considered as having no scientific basis.

Origin of pseudoscience

First recorded in 1835–45; pseudo- + science

Other words from pseudoscience

  • pseu·do·sci·en·tif·ic [soo-doh-sahy-uhn-tif-ik], /ˌsu doʊˌsaɪ ənˈtɪf ɪk/, adjective
  • pseu·do·sci·en·tif·i·cal·ly, adverb
  • pseu·do·sci·en·tist, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use pseudoscience in a sentence

British Dictionary definitions for pseudoscience


/ (ˌsjuːdəʊˈsaɪəns) /

  1. a discipline or approach that pretends to be or has a close resemblance to science

Derived forms of pseudoscience

  • pseudoscientific, adjective

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

Cultural definitions for pseudoscience


[ (sooh-doh-seye-uhns) ]

A system of theories or assertions about the natural world that claim or appear to be scientific but that, in fact, are not. For example, astronomy is a science, but astrology is generally viewed as a pseudoscience.

The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.