catapeltic

Pertaining to a catapult or catapults.

[T]he superior discipline and skill of the Romans were fully compensated by the strength of position and the catapeltic engines of the Macedonians.

[Dionysius, governor of the Cassandrian garrison of Munychia] held out valiantly for two days; but at length the superior forces of the enemy, and the mischief done by their catapeltic engines, drove the defenders from the walls, when Demetrius [of Phalerum] entered the fortress, Dionysius was taken, and his garrison laid down their arms: […]

A catapult.

That artillery which afterward so much promoted the victories of the Roman armies, machinery for shooting darts and stones of size far beyond the strength of man's arm to throw, (Diodorus [Siculus] calls it the catapeltic) was now either invented, or first perfected, so as to be valuable for practice.