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.
WordReference Random House Learner's Dictionary of American English Â© 2016. en- ,prefix. en- is attached to adjectives or nouns to form verbs meaning: to cause (a person or thing) to be in (the place, condition, or state mentioned); to keep in or place in:en- + rich â enrich (= to cause to be rich); en- + tomb â entomb ( = to cause to be in a tomb);