A more thorough explanation:

Definition: Revalidation is the act of establishing the validity of something that was previously revoked or expired. It can also refer to the act of publishing something again or spreading a defamatory statement more widely.

In the context of wills and estates, revalidation refers to the process of reestablishing the validity of a previously revoked will. This can be done by repeating the formalities of execution or by using a codicil. For example, if someone revokes their will but later decides to reinstate it, they can do so through revalidation.

Revalidation can also refer to the act of publishing something again. For example, if a book goes out of print and the publisher decides to release a new edition, this would be considered revalidation.

In the context of defamation, revalidation refers to the act of repeating or spreading a defamatory statement more widely. For example, if someone makes a false and damaging statement about someone else, and then repeats that statement to others, they are engaging in revalidation of the defamatory statement.

These examples illustrate how revalidation can refer to different types of actions, but they all involve establishing the validity of something that was previously revoked or expired.