The act of proving or verifying a hypothesis, theory, or claim through experiment, observation, or data; substantiation.
新薬の効果は臨床試験で実証された。
The new drug's effectiveness was demonstrated in clinical trials.
彼の理論はデータで実証されていないと批判された。
His theory was criticized for not being substantiated by data.
この新しい方法の有効性を実証するためにさらなる実験が必要だ。
Further experiments are needed to demonstrate the effectiveness of this new method.