にんいせんたくこうせいようそ 任意選択構成要素 LinksSentence search for 任意選択構成要素Sentence search for にんいせんたくこうせいようそKanji details for 任, 意, 選, 択, 構, 成, 要 and 素Edit in JMdict Noun1. optional (O) componentComputing Discussions Log in to talk about this word.