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.
Inhere \In*here\, v. i. [imp. & p. p. Inhered; p. pr. & vb. n. Inhering.] [L. inhaerere; pref. in- in + haerere to stick, hang. See Hesitate.] To be inherent; to stick (in); to be fixed in or permanently incorporated with something; to cleave (to); to belong, as attributes or qualities. [1913 Webster] They do but inhere in the subject that supports them.