[lawng-cheyn, long-]
adjective Chemistry.
  1. pertaining to molecules composed of long chains of atoms, or polymers composed of long chains of monomers.

Origin of long-chain

First recorded in 1925–30
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for long-chain

Historical Examples of long-chain

  • And the woman in the blue smock, beside him, worked in organic chemistry; see the diagrams of long-chain molecules behind her.


    H. Beam Piper

British Dictionary definitions for long-chain


  1. 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