LDL

noun

ˌel-(ˌ)dē-ˈel 

: 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 : bad cholesterol compare hdl

Examples of LDL in a Sentence

Recent Examples on the Web

Offers Heart Protection Preliminary research suggests that plum fruit benefits may include significantly lowering low-density lipoprotein (LDL) or bad cholesterol. —Ross Phan, Verywell Health, 21 Nov. 2025

Not only that, but the avocado is rich in monounsaturated fats, which help lower the bad cholesterol (LDL) in your body. —Cheyenne Buckingham, SELF, 21 Nov. 2025

Together, these four elements block cholesterol absorption, help remove LDL from the bloodstream and reduce inflammation in the arteries. —Kelly McGreal, FOXNews.com, 17 Nov. 2025

Male mice also saw an increase in good cholesterol (HDL) and decrease in bad cholesterol (LDL), while female mice experienced a decrease in insulin levels. —New Atlas, 14 Nov. 2025

Word History

Etymology

low-density lipoprotein

First Known Use

1962, in the meaning defined above

Medical Definition

LDL

noun

ˈel-ˈdē-ˈel 

: 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