lipid

noun

lip·​id ˈli-pəd How to pronounce lipid (audio)
variants or less commonly lipide
: any of various substances that are soluble in nonpolar organic solvents (such as chloroform and ether), that are usually insoluble in water, that with proteins and carbohydrates constitute the principal structural components of living cells, and that include fats, waxes, phospholipids, cerebrosides, and related and derived compounds
lipidic adjective

Examples of lipid in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Affected staff would then be required to undergo further medical evaluation — including blood sugar and lipid profile tests — within seven days to assess potential health risks, NDTV reported. Jessica Mekles, FOXNews.com, 2 Apr. 2026 The new bond repair balm uses vegan silk protein, hyaluronic acid, peptides from rice protein and a lipid complex strengthen, repair and hydrate hair in three minutes. Jackie Fields, PEOPLE, 1 Apr. 2026 It is estimated that, based on measures of blood glucose, lipids, and other parameters, less than 12% of the adult American population can even be said to metabolically healthy. Christopher Duggan, STAT, 27 Mar. 2026 Haruharu Wonder Black Rice Probiotics Barrier Essence Black rice probiotics and barrier-loving ceramides and lipids make up this essence, which prevents irritation, locks in moisture, and boosts skin’s elasticity. Lily Wohlner, Allure, 25 Mar. 2026 See All Example Sentences for lipid

Word History

Etymology

International Scientific Vocabulary

First Known Use

1925, in the meaning defined above

Time Traveler
The first known use of lipid was in 1925

Cite this Entry

“Lipid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lipid. Accessed 3 Apr. 2026.

Kids Definition

lipid

noun
lip·​id ˈlip-əd How to pronounce lipid (audio)
: any of various substances (as fats and waxes) that with proteins and carbohydrates make up the principal structural parts of living cells

Medical Definition

lipid

noun
lip·​id ˈlip-əd How to pronounce lipid (audio)
variants also lipide
: any of various substances that are soluble in nonpolar organic solvents (as chloroform and ether), that with proteins and carbohydrates constitute the principal structural components of living cells, and that include fats, waxes, phospholipids, cerebrosides, and related and derived compounds

More from Merriam-Webster on lipid

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster