hy·per·cho·les·ter·ol·e·mi·a 
(hī′pər-kə-lĕs′tər-ə-lēmē-ə)
(hī′pər-kə-lĕs′tər-ə-lēmē-ə)n.
1. An excess of cholesterol in the blood.
2. A familial disorder characterized by high serum concentrations of total cholesterol and LDL and normal concentrations of triglycerides.