"a farewell, a bidding farewell," 1610s, from past participle stem of Latin valedicere "bid farewell, take leave," from vale "farewell!," second person singular imperative of valere "be well, be strong" (see valiant) + dicere "to say" (see diction).
实用例句
1. He gave a touching valediction at graduation.
他在毕业典礼上发表了动人的告别辞.
来自《简明英汉词典》
2. She will give a touching valediction at graduation.
