English

Definition of theorist noun from the Oxford Advanced Learner's Dictionary

  

theorist

 noun
noun
BrE BrE//ˈθɪərɪst//
 
; NAmE NAmE//ˈθiːərɪst//
 
, NAmE//ˈθɪrɪst//
 
(also theoretician
BrE BrE//ˌθɪərəˈtɪʃn//
 
; NAmE NAmE//ˌθiːərəˈtɪʃn//
 
, NAmE//ˌθɪrəˈtɪʃn//
 
)
 
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a person who develops ideas and principles about a particular subject in order to explain why things happen or exist a political theoristExtra examples Feminist theorists have long talked about the way women are represented in the media. Jean Piaget was a leading educational theorist. Some theorists of social change disagree with this analysis. There are plenty of conspiracy theorists with some wacky ideas.
See the Oxford Advanced American Dictionary entry: theorist