catapeltic

PIE word *ḱóm The adjective is a learned borrowing from Ancient Greek κᾰτᾰπελτῐκός (kătăpeltĭkós, “of or for a catapult”) + English -ic (suffix meaning ‘of or pertaining to’ forming adjectives from nouns). Κᾰτᾰπελτῐκός (Kătăpeltĭkós) is derived from κᾰτᾰπέλτης (kătăpéltēs) + -ῐκός (-ĭkós, suffix meaning ‘of or pertaining to’ forming adjectives from nouns); while κᾰτᾰπέλτης (kătăpéltēs) is a literary form of κᾰτᾰπᾰ́λτης (kătăpắltēs, “catapult; torture instrument”), from κᾰτᾰ- (kătă-, prefix meaning ‘against’) + πάλλω (pállō, “to poise or sway a missile before it is thrown; to brandish a weapon; (passive) to swing or dash oneself”) (ultimately from Proto-Indo-European *pel- (“to beat; to drive; to push”)) + -της (-tēs, suffix forming masculine agent nouns). The noun is derived from the adjective.

来源：wiktionary