ro·ga·to·ry (rō'gə-tôr'ē, -tōr'ē) adj.
Law Requesting information. Used especially of a request by one court of another, often foreign court for aid in obtaining desired information: a rogatory letter.
[French rogatoire, from Medieval Latin rogātōrius, from Latin rogātus, past participle of rogāre, to ask; see reg- in Indo-European roots.]