theorem
noun
[ ˈθɪərəm ]
• a general proposition not self-evident but proved by a chain of reasoning; a truth established by means of accepted truths.
Similar:
proposition,
hypothesis,
postulate,
thesis,
assumption,
deduction,
statement,
rule,
formula,
principle,
Origin:
mid 16th century: from French théorème, or via late Latin from Greek theōrēma ‘speculation, proposition’, from theōrein ‘look at’, from theōros ‘spectator’.