: having a relatively long chain of atoms and especially carbon atoms in the molecule
long-chain hydrocarbons

Examples of long-chain 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.
Experts recommend taking two long-chain omega-3 fatty acids—eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA)—in daily doses of no more than 5 grams (g).5 4. Sarah Bence, Verywell Health, 11 July 2025 Complex carbohydrates are long-chain molecules and include polysaccharides, starch, and fiber. Barbie Cervoni, Verywell Health, 9 June 2025 Those who were on the high-fiber intervention plan had significantly lower concentrations of long-chain PFAS compared to those who consumed a lower-fiber rice milk powder drink. Stephanie Brown, Verywell Health, 21 May 2025 Unlike long-chain fatty acids, MCTs are absorbed from the small intestine intact. Health, 14 May 2025 Elapid venom contains peptides called short-chain neurotoxins (SNX) and long-chain neurotoxins (LNX). Katherine Bourzac, Scientific American, 7 May 2025 Bacterial fermentations also encourage the formation of long-chain fatty acids. Joseph V Micallef, Forbes.com, 26 Apr. 2025 More Missions to Come The discovery of these long-chain organic molecules is a major breakthrough in studying Mars’ habitability. Discover Magazine, 26 Mar. 2025 Unlike long-chain triglycerides, the liver absorbs MCTs and breaks them down quickly. Melissa Nieves, Verywell Health, 18 Mar. 2025

Word History

First Known Use

1898, in the meaning defined above

Time Traveler
The first known use of long-chain was in 1898

Browse Nearby Words

Cite this Entry

“Long-chain.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/long-chain. Accessed 21 Jul. 2025.

Medical Definition

long-chain

adjective
: having a relatively long chain of atoms and especially carbon atoms in the molecule
long-chain hydrocarbons
Last Updated: - Updated example sentences
Love words? Need even more definitions?

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