PLUPERFECT

Plu″per′fect (?), a. [[L. plus more + perfectus perfect; cf. F. plus-que-parfait, L. plusquamperfectum.]] More than perfect; past perfect; — said of the tense which denotes that an action or event was completed at or before the time of another past action or event. — n. The pluperfect tense; also, a verb in the pluperfect tense.