theoremKK [ˋθɪrəm] /ˈθɪɹəm/名詞1定理數學The students spent the whole class proving this geometry theorem.學生花了一整堂課證明這個幾何定理。2原理、命題His entire argument rests on a theorem nobody has questioned.他整套論證都建立在一個從沒有人質疑過的原理上。