apo·​li·​po·​pro·​tein ˌa-pō-ˌlī-pō-ˈprō-ˌtēn How to pronounce apolipoprotein (audio)
: a protein that combines with a lipid to form a lipoprotein
often used with a letter or letter and number

Examples of apolipoprotein in a Sentence

Recent Examples on the Web The researchers found that people on the LCHF diet had higher levels of low-density lipoprotein, also known as LDL, cholesterol and apolipoprotein B. Apolipoprotein B is a protein that coats LDL cholesterol proteins and can predict heart disease better than elevated levels of LDL cholesterol can. Carma Hassan, CNN, 5 Mar. 2023 Heart: An apolipoprotein B (apoB) blood test, the best indicator of heart-attack risk. Ben Court, Men's Health, 10 Mar. 2023 Mutations in the apolipoprotein E gene (APOE) are one of the strongest risk factors for late-onset Alzheimer’s. William A. Haseltine, Forbes, 3 Oct. 2022 The bacteria-slaying, soap-like protein is an apolipoprotein called APOL3. Shi En Kim, Smithsonian Magazine, 20 July 2021 To assess young people’s cholesterol levels, measurements were recorded periodically from 1999 to 2016 for total cholesterol, HDL, LDL, non-HDL cholesterol, triglycerides (a type of fat) and apolipoprotein B (a protein component of LDL). Linda Searing, chicagotribune.com, 9 Oct. 2019 Schulz said those who are interested in participating first go through a genetic test done by a cheek swab to study their apolipoprotein (APOE) genes, which are found in three variants. Tracy Maness, Houston Chronicle, 9 Apr. 2018 Instead, a blood protein known as apolipoprotein B (apoB) is a truer indicator of the threat to our arteries, the doctors say. Roni Dengler, Science | AAAS, 8 Dec. 2017 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'apolipoprotein.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1966, in the meaning defined above

Time Traveler
The first known use of apolipoprotein was in 1966

Dictionary Entries Near apolipoprotein

Cite this Entry

“Apolipoprotein.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/apolipoprotein. Accessed 24 Feb. 2024.

Medical Definition


: a protein that combines with a lipid (such as cholesterol or triglyceride) to form a lipoprotein

Note: Apolipoproteins are grouped into several classes designated by letters, such as A, B, or C, with specific class members typically identified by a number.

… some doctors are using a new cholesterol test that may better predict heart attacks, particularly among women. It looks at particles called apolipoprotein B (apoB), which are found in LDL cholesterol.Ladies' Home Journal
HDL particles contain equal parts of protein and cholesterol; the protein component consists mainly of apolipoprotein A-1C. Ezzell, Science News

called also apo

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