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[lawng-cheyn, long-] /ˈlɔŋˌtʃeɪn, ˈlɒŋ-/
adjective, Chemistry
pertaining to molecules composed of long chains of atoms, or polymers composed of long chains of monomers.
Origin of long-chain
1925-30 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for long-chain
  • The long-chain fatty acid is essential to eyesight development and seems to increase information processing in infants.
  • That's because reptiles and fish are particularly rich in long-chain polyunsaturated fatty acids.
  • Digesters do a poor job of processing long-chain fatty acids, leaving behind a thick layer of fat at the end of digestion.
  • The dark material is dust: long-chain molecules that absorb starlight.
  • Plastics and their kin, synthetic fabrics, are made of polymers: long-chain molecules made of repeating links known as monomers.
  • The long-chain hydrocarbons used as diesel fuel do not burn as easily as the lighter ones found in petrol.
British Dictionary definitions for long-chain


(chem) having a relatively long chain of atoms in the molecule
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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