Main entry: theory, possibility, hypothesis
Definition: a tentative insight into the natural world; a concept that is not yet verified but that if true would explain certain facts or phenomena
Usage: 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
Main entry: supposition, surmisal, surmise, hypothesis, guess, speculation, conjecture
Definition: a message expressing an opinion based on incomplete evidence
Main entry: hypothesis
Definition: a proposal intended to explain certain facts or observations