hypothesis

nouns

a proposal intended to explain certain facts or observations
is derived from
is a type of (narrower)
something proposed (such as a plan or assumption)
a tentative insight into the natural world; a concept that is not yet verified but that if true would explain certain facts or phenomena
"a scientific hypothesis that survives experimental testing becomes a scientific theory"; "he proposed a fresh theory of alkalis that later was accepted in chemical practices"
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a message expressing an opinion based on incomplete evidence
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