Baretti: A dictionary of the English and Italian languages
Induráre, v. a.
1. to indurate, harden, make hard or solid; 2. to blunt, render hard, insensible, or unfeeling; v. n. 1. to become hard;2. to become hard, intractable, inexorable, obstinate;3. to become firm, stable, immutable.
Florio: a worlde of wordes, or most copious, dictionarie in Italian and English