heterocyclic
[het-er-uh-sahy-klik, -sik-lik]
- of or relating to the branch of chemistry dealing with cyclic compounds in which at least one of the ring members is not a carbon atom (contrasted with homocyclic).
- noting such compounds, as ethylene oxide, C2H4O.
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Origin of heterocyclic
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Historical Examples of heterocyclic
Carbocyclic rings will next be treated, benzene and its allies in some detail; and finally the heterocyclic nuclei.
heterocyclic
- (of an organic compound) containing a closed ring of atoms, at least one of which is not a carbon atomCompare homocyclic
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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
heterocyclic
(hĕt′ə-rō-sī′klĭk, -sĭk′lĭk)- Containing more than one kind of atom joined in a ring.
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The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
heterocyclic
[hĕt′ə-rō-sī′klĭk, -sĭk′lĭk]
- Of or relating to a compound containing a closed ring structure made of more than one kind of atom. Pyridine (C5H5N), for example, is a heterocyclic compound, as its ring contains five carbon atoms and one nitrogen atom. Compare homocyclic.
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The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.