: 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.
The body digests these fats more quickly and easily than long-chain fatty acids. Isabel Vasquez Rd Ldn, Health, 30 Dec. 2025 Oily fish, such as salmon, are higher in long-chain omega-3 fatty acids which may help prevent heart disease. Heather Jones, Verywell Health, 30 Mar. 2026 The discovery of sulfur-rich organics followed in 2018, and just this year, more complex, long-chain alkanes were found in Martian mudstones. Dirk Schulze-Makuch, Big Think, 17 Sep. 2025 Our results indicate that pregnant women have special reason to be concerned about exposure to long-chain PFAS through drinking water. Ashley Langer, The Conversation, 8 Dec. 2025 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 9 Jul. 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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