from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An organic molecular structure in the form of an unbranched open chain.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A structural element of a molecule consisting of an unbranched sequence of atoms or simple groups, especially such a sequence of methylene groups in a aliphatic compound
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. an open chain of atoms with no side chains
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