ob·tu·ra·tion /ˌɑbtjəˈreʃən, tə-/ 閉塞,密閉
ob·tu·ra·tion /ˌɑbt(j)əˈreʃən/ 名詞
Ob·tu·ra·tion n. The act of stopping up, or closing, an opening. “Deaf by an outward obturation.” ◄ ►