A more thorough explanation:

Definition: Ad inquirendum is a legal term that means "to inquire." It refers to a writ that instructs someone to investigate something that is in question in a pending case.

Example: If a case involves a disputed property boundary, a court may issue an ad inquirendum writ to a surveyor, instructing them to investigate and report on the exact location of the boundary.

Explanation: This example illustrates how ad inquirendum can be used in a legal context. The writ is issued to someone with expertise in the relevant area, in this case, a surveyor, to investigate and provide information that will help resolve the dispute in the case.