presupposition
🇺🇸
/ˌpriːsʌpəˈzɪʃn/
🇬🇧
/ˌpriːsʌpəˈzɪʃn/
A belief or idea that you think is true without having proof, which is used as a starting point for further discussion or argument.
His argument had a basic presupposition that all planets have circular orbits.
彼の議論は、すべての惑星が円軌道を持っているという基本的な前提を持っていました。