Hy″per– (?). [Gr. υπἕρ over, above; akin to L. super, E. over. See Over, and cf. Super-.] 1. A prefix signifying over, above; as, hyperphysical, hyperthyrion; also, above measure, abnormally great, excessive; as, hyperæmia, hyperbola, hypercritical, hypersecretion.
2. (Chem.) A prefix equivalent to super- or per-; as hyperoxide, or peroxide. See Per-.