: 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
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Instead of first going through your blood, muscles, and tissues like long-chain triglycerides, MCTs go straight to your liver.8 4. Lauren Panoff, Verywell Health, 11 Aug. 2025 These forever chemicals have so far been implicated in a wide range of medical studies, and scientists are only just beginning to unpack the health risks of long-chain PFAS exposure. New Atlas, 28 July 2025 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

Word History

First Known Use

1898, in the meaning defined above

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

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Cite this Entry

“Long-chain.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/long-chain. Accessed 20 Aug. 2025.

Medical Definition

long-chain

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