valediction

      音标：[,væli'dikʃәn]
      n. 告别, 告别辞
      在线英汉词典
valediction的短语、例句：
      valediction n[C, U] (fml 文) (words used in) saying farewell, esp on serious occasions 告别; 告辞; 告别辞
      utter a valediction 致告别辞
      bow in valediction 鞠躬告别.