Medical Dictionary


noun \ˈel-ˈdē-ˈel\

Medical Definition of LDL

:  a lipoprotein of blood plasma that is composed of a moderate proportion of protein with little triglyceride and a high proportion of cholesterol and that is associated with increased probability of developing atherosclerosis—called also bad cholesterol, beta-lipoprotein, low-density lipoprotein; compare hdl, vldl


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