| Noun | 1. | abetalipoproteinemia - a rare inherited disorder of fat metabolism; characterized by severe deficiency of beta-lipoproteins and abnormal red blood cells (acanthocytes) and abnormally low cholesterol levels congenital disease, genetic abnormality, genetic defect, genetic disease, genetic disorder, hereditary condition, hereditary disease, inherited disease, inherited disorder - a disease or disorder that is inherited genetically hypobetalipoproteinemia - a hereditary disorder characterized by low levels of beta-lipoproteins and lipids and cholesterol lipidosis - a disorder of lipid metabolism; abnormal levels of certain fats accumulate in the body |