水すい素そすいそCommon wordJLPTN2Freq.FrequencyTop 10,000Meanings1nounhydrogenThe chemical element hydrogen (H). Used in scientific, technical, and everyday contexts.水すい素そは宇う宙ちゅうで最もっとも豊ほう富ふな元げん素そです。Hydrogen is the most abundant element in the universe.水すい素そ自じ動どう車しゃは水すい素そを燃ねん料りょう