The Collaborative International Dictionary of English v.0.48:

lipemia \lip*e"mi*a\ (l[i^]p*[=e]"m[-e]*[.a]), n. [Gr. li`pos
   fat + 'ai^ma blood.] (Med.)
   The presence of an abnormally high concentration of lipid in
   the blood. Called also hyperlipemia, hyperlipidemia,
   hyperlipoidemia, lipidemia, lipoidemia.
   [PJC] lipfern

WordNet (r) 3.0 (2006):

hyperlipemia
    n 1: presence of excess lipids in the blood [syn: lipemia,
         lipaemia, lipidemia, lipidaemia, lipoidemia,
         lipoidaemia, hyperlipemia, hyperlipaemia,
         hyperlipidemia, hyperlipidaemia, hyperlipoidemia,
         hyperlipoidaemia]