Yeah, in English I'd say the word 'theory' has three distinct meanings. A guess, as in 'I have a theory about this;' a scientific theory, i.e. set of testable h

Yeah, in English I'd say the word 'theory' has three distinct meanings. A guess, as in 'I have a theory about this;' a scientific theory, i.e. set of testable hypotheses, etc.; and a set of related propositions that form a cohesive subject (like number theory).