LDL
noun [ U ] medical specialized uk/ˌel.diːˈel/ us/ˈelˌdiːˈel/
低密度脂蛋白（low-density lipoprotein的缩写）
abbreviation for low-density lipoprotein: a protein in the blood that carries cholesterol (= a substance found in blood that may cause heart disease if there is too much of it)
LDL cholesterol 低密度脂蛋白胆固醇