καυσ-τικός · kaus-tikos — LSJ
capable of burning, opp. καυστός (capable of being burnt), τὸ καυστὸν οὐ καίεται . . ἄνευ τοῦ καυστικοῦ Arist. de An. 417a8, cf. Ph. 251a16; τὸ πῦρ φύσει κ. Phld. Mus. p.71 K.: Comp. -ώτερος Arist. PA 648b18: Sup. -ώτατος Id. Cael. 307a1, Corn. ND 32.
corrosive, caustic, δύναμις κ. Dsc. 2.4 (Comp.); φάρμακα κ. Gal. 11.754, Zopyr. ap. Orib. 14.57.1.
of or by means of burning, βάσανοι LXX 4 Ma. 6.27. Adv. -κῶς, βλάπτειν Eust. 70.36.
of persons, feverish, Hp. Prorrh. 1.70; also τὰ κ. inflammatory humours, Id. Epid. 4.2.