theoretical Meaning in the Cambridge English Dictionary
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Meaning of “theoretical” in the English Dictionary

"theoretical" in British English

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theoreticaladjective

uk   /θɪəˈret.ɪ.kəl/  us   /ˌθiː.əˈret̬-/
C2 based on the ​ideas that ​relate to a ​subject, not the ​practical uses of that ​subject: theoretical ​physicsC2 related to an ​explanation that has not been ​proved
(Definition of theoretical from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"theoretical" in American English

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theoreticaladjective

 us   /ˌθi·əˈret̬·ɪ·kəl/
based on ​theory or on ​possibilities: The ​president does not ​want to ​answer any theoretical ​questions.
theoretically
adverb  /ˌθi·əˈret̬·ɪ·kli/
(Definition of theoretical from the Cambridge Academic Content Dictionary © Cambridge University Press)

"theoretical" in Business English

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theoreticaladjective

uk   us   /θɪəˈretɪkəl/
based on ​ideas or theories, rather than practical uses of something or ​actualevents: theoretical ​economics/​physics theoretical ​models/​analyses/​approaches a theoretical ​framework/​foundation/​underpinning
existing only as an ​idea, rather than being ​real or actually ​happening: The threat of ​climatechange is no ​longer merely theoretical.
(Definition of theoretical from the Cambridge Business English Dictionary © Cambridge University Press)
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