ob-dūresco, rui, 3
* V. n., to grow or become hard, to harden (class. only in the trop. signif.; syn. occalesco).
* Lit., Cato, R. R. 50: semen diuturnitate obdurescit,Varr. R. R. 3, 14, 5: nervis divinis,Arn. 5, 18.
* Trop., to become hardened, insensible, obdurate: ita miser cubando in lecto hic expectando obdurui,Plaut. Truc. 5, 24: ad ista obduruimus,Cic. Att. 13, 2, 1: usu obduruerat et percalluerat civitatis incredibilis patientia,id. Mil. 28, 76: nisi obduruisset animus ad dolorem,id. Fam. 2, 16, 1: contra fortunam,id. Tusc. 3, 28, 67; cf. id. Fin. 3, 11, 37: consuetudine,id. Phil. 2, 42: amicorum alii obduruerunt,id. Fam. 5, 15: Gorgonis vultu,at the sight of,Prop. 3, 20, 13: dociliora sunt ingenia, priusquam obduruerunt,Quint. 1, 12, 8.

s. TLL