pĕremptālis — Lewis & Short
pĕremptālis, e, adj.peremptus,
I of or belonging to destruction or abolition, abolishing, cancelling; only in augural lang., fulmina, lightnings that destroy the effect or portent of former lightnings:
peremptalia fulgura Gracchus ait vocari, quae superiora fulgura aut portenta vi suā perimant,Fest. p. 214 Müll.:
peremptalia fulmina, quibus tolluntur priorum fulminum minae,Sen. Q. N. 2, 49, 2.