英汉词典

1. 正当(性);正确(性)；可信(性)
    The validity of something such as a result or a piece of information is whether it can be trusted or believed.

validity在线翻译

    e.g. Shocked by the results of the elections, they now want to challenge the validity of the vote...
           选举结果令他们很震惊，他们现在要对选举的可信性提出质疑。
    e.g. Some people, of course, denied the validity of any such claim.
           当然，一些人否定了此类说法的合理性。