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[streyt-cheyn] /ˈstreɪtˈtʃeɪn/
noun, Chemistry.
an open chain of atoms, usually carbon, with no side chains attached to it.
Also called straight chain.
Compare branched chain.
Origin of straight-chain
First recorded in 1925-30 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for straight chain

straight chain

  1. an open chain of atoms in a molecule with no attached side chains
  2. (as modifier): a straight-chain hydrocarbon
Compare branched chain
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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straight chain in Science
straight chain  
An arrangement of atoms of the same type that forms an unbranched open chain. Propane is a straight-chain compound with a chain of three carbon atoms.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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