pseudosciencePronunciation: /ˈsjuːdəʊˌsʌɪəns/Definition of pseudoscience noun a collection of beliefs or practices mistakenly regarded as being based on scientific method: the new pseudoscience of ‘counselling’ [mass noun]:an explanation of how to distinguish genuine science from pseudoscienceDerivatives pseudoscientificPronunciation: /-ˈtɪfɪk/ adjective pseudoscientist noun pseudoscience in other Oxford dictionaries Definition of pseudoscience in the US English dictionary