The Collaborative International Dictionary of English v.0.48:
lipidosis \lip`id*o"sis\ (l[i^]p`[i^]d*[=o]"s[i^]s), n. (Med.) A disorder of lipid metabolism, whether congenital or acquired. [PJC]WordNet (r) 3.0 (2006):
lipidosis n 1: a disorder of lipid metabolism; abnormal levels of certain fats accumulate in the body