interrogatories

Definition from Nolo’s Plain-English Law Dictionary

Written questions sent by one party to another as part of the pretrial investigation process, called "discovery." Interrogatories must be answered in writing under oath or under penalty of perjury within a specified time (such as 30 days). Lawyers can write their own sets of questions, or can use form interrogatories designed for the most common types of lawsuits.

Definition provided by Nolo’s Plain-English Law Dictionary.