Baretti: A dictionary of the English and Italian languages
Grandézza, s. f.
1. greatness, largeness, bigness, highness; 2. greatness, nobility, grandeur, dignity, magnanimity; 3. any animal of immense size; 4. excess, enormity (of a crime or misfortune).— di vino, the body or strength of wine; 5. (met.) whatever is or may be conceived susceptible of increase or diminution.
Florio: a worlde of wordes, or most copious, dictionarie in Italian and English
grandezza: greatnesse, bignesse, whether it be in quality or quantity, of body or of minde.