reduresco
rĕ-dūresco, ĕre,
- v. inch. n., to grow hard again: ferrum, Vitr. 1, 4.
re-dūrēsco, ere, wieder hart werden, Vitr. 1, 4, 3.
rĕdūrēscō, ĕre, intr., redevenir dur, se durcir : Vitr. Arch. 1, 4, 3.