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

Unsaturated fats are linked to lower levels of LDL cholesterol. —Emily Kay Votruba, EverydayHealth.com, 31 Mar. 2026

Some studies have shown that cumin powder can lower bad LDL cholesterol and triglycerides. —Sheah Rarback, Miami Herald, 26 Mar. 2026

So, what should your LDL goals be to prevent a first heart attack or stroke? —Sara Moniuszko, USA Today, 17 Mar. 2026

For example, familial hypercholesterolemia is a condition in which inherited genetic changes cause very high LDL levels regardless of diet. —Alexandria Nyembwe, Health, 16 Mar. 2026

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