|1.||[ noun ] a proposal intended to explain certain facts or observations|
|Related terms:||proposal speculate|
|2.||[ noun ] a tentative theory about 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"
|Related terms:||concept model assumption speculation theory speculate|
|3.||[ noun ] a message expressing an opinion based on incomplete evidence|
|Synonyms:||guess speculation surmise supposition surmisal conjecture|
|Related terms:||opinion divination think estimate speculate guess suspect surmise|