1550s, "an index, list, catalogue," from Late Latin repertorium "inventory, list," from Latin repertus, past participle of reperire "to find, get, invent," from re-, intensive prefix (see re-), + parire, archaic form of paerere "produce, bring forth" (from PIE root *pere- (1) "to produce, procure"). Meaning "list of performances" is first recorded 1845, from similar use of French repertoire; repertory theater is attested from 1896. Related: Repertorial.