theory

US /ˈθiəri, ˈθɪri/

UK /ˈθiəri/

A2TOEIC
n. (c./u.)Noun (Countable/Uncountable)Ideas or principles that explain facts or events
He has a theory that cats want to talk to us
n. (c./u.)Noun (Countable/Uncountable)An idea or belief about something
His theory about the cause of the fire was pure speculation.

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