Rigor: A word with two different but related meanings in medicine: 1. A chill, usually with shivering, as at the onset of high fever and chills. 2. Rigidity, as in rigor mortis, the rigidity of a body after death. The alternate spelling rigour is chiefly British. From the French, from the Latin rigor, meaning stiffness, from rigere, to be stiff.
-ine is a suffix used in chemistry to denote two kinds of substance. The first is a chemically basic and alkaloidal substance.
Epic Heroes and Heroines: -ine is Greek. Your supposition that heroine uses a Germanic suffix to form a feminine from hero turns out to be wrong. Yes, German has such a suffix (e.g. Koenigin KÃ¶nigin koenig) kÃ¶nig king but that is not what is going. on here