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supposition

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supposition/ˌsʌpəˈzɪʃən/noun
pluralsuppositions
supposition
/ˌsʌpəˈzɪʃən/
noun
pluralsuppositions
Learner's definition of SUPPOSITION  
: an idea or theory that you believe is true even though you do not have proof
[count]
[noncount]
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