vitiation [.viʃi'eiʃən] n. 损害, 败坏, 使无效 词形变化: 形容词: vitiable | 名词: vitiation | 动词过去式: vitiated | 动词过去分词: vitiated | 动词现在分词: vitiating | 动词第三人称单数: vitiates | 详细释义: n. 1. 损害; 污染 2. 无效; 堕落