definitive
From LSJ
ἔξαψις σφοδρὰ μετὰ πολλῆς βίας πίπτουσα ἐπὶ γῆς → a violent flare-up falling on the ground with great force, thunder and lightning
dēfīnītīvē: adv., v. foll. art.
dēfīnītīvē, avec précision : C. Aur. Acut. 1 præf.; Tert. Carn. 18.
