: 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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Before the measurements, researchers mixed bioplastic powder, such as long-chain aliphatic polyesters (LCAP), into forest soil where microbes digest natural polymers such as cellulose. — Muskan Bhatia, Interesting Engineering, 21 Oct. 2026 And fatty fish, such as salmon, sardines, and mackerel, earn their place thanks in large part to their long-chain omega-3 fatty acids, particularly EPA and DHA. — Laura Solla, Vogue, 21 Oct. 2026 The middle zone holds polyvinylpyrrolidone (PVP), a plastic-like material made of long-chain molecules. — New Atlas, 4 Oct. 2026 Mussels Like oysters, mussels are a source of long-chain omega-3 fatty acids. — Heather Jones, Verywell Health, 6 Aug. 2026 See All Example Sentences for long-chain

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 26 Oct. 2026.

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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