What does pseudoscience mean?
Pseudoscience refers to claims, beliefs, or practices that are presented as scientific but do not follow the methods and evidentiary standards of science. The term is usually critical: it identifies ideas that borrow scientific language or seek scientific authority while remaining untested, unsupported, or resistant to credible investigation. It is commonly applied to astrology, unproven health treatments, dubious paranormal explanations, and other popular beliefs that have not produced reliable, repeatable evidence. The adjective form, pseudoscientific, describes arguments or practices that make scientific-sounding claims without the substance of scientific reasoning. In educational and public contexts, the word helps distinguish formal, evidence-based inquiry from imitation, misuse, or misrepresentation of science. It should be applied with care, since merely disagreeing with a scientific conclusion does not make a field pseudoscientific; the label concerns methods, evidence, and claims of scientific validity rather than whether a conclusion is popular or controversial.
nounA body of claims, beliefs, or practices that is presented as scientific but lacks the evidence, methods, and testability of genuine science. The term is generally used critically to characterize unsupported or misleading claims that borrow the authority of science.
- Claims, beliefs, or practices presented as scientific but unsupported by reliable evidence, sound methodology, or empirical testing.
"The article dismissed the proposed healing method as pseudoscience rather than accepting its claims without independent testing."
"The researchers warned that the viral trend was pseudoscience and had no basis in controlled studies."
"His discussion of astrology and other pseudoscience contrasted popular beliefs with the principles of astronomy and biology."
Plural usage is uncommon; the singular is normally used for the general concept, while the plural can refer to separate systems of alleged knowledge.
"The book compares several pseudosciences that have persisted despite repeated scientific testing."
The word literally joins ideas meaning “false” and “knowledge,” exposing the central problem of pseudoscience: it presents itself as knowledge while evading scientific scrutiny.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does pseudoscience come from?
The word combines the combining form pseudo-, from Greek pseudes meaning “false” or “pretended,” with science, from Latin scientia, meaning “knowledge” or “knowing.” The combination was used in the 19th century for false or pretended versions of established systems of knowledge. Its development reflects a long-standing need to distinguish genuine scientific inquiry from doctrines that only imitate its outward form.
Related word forms
How pseudoscience is actually used
Usually derogatory or sharply critical. It is used for ideas that present themselves as scientific but fail basic standards of evidence, verification, or reproducibility, and it can refer either to a specific claim or to a broader field of alleged knowledge.
Easily confused with pseudoscience
Science is a systematic method for building and testing evidence-based explanations, whereas pseudoscience imitates or claims scientific authority without meeting scientific standards.