Dictionary
Thesaurus
Reference
Translate
Web
Related Searches
on Ask.com
Nearby Entries
isomerism - 4 dictionary results
Sponsored Links Isomers at Amazon
Huge Selection at Great Low Prices Vitamins, Personal Care and More
Amazon.com/health
Isomers
Bargain Prices. Smart Deals. Save on Isomers!
Shopzilla.com

i⋅som⋅er⋅ism

   [ahy-som-uh-riz-uhm]
–noun
1. Chemistry. the relation of two or more compounds, radicals, or ions that are composed of the same kinds and numbers of atoms but differ from each other in structural arrangement (structural isomerism), as CH3OCH3 and CH3CH2OH, or in the arrangement of their atoms in space and therefore in one or more properties. Compare optical isomerism, stereoisomerism.
2. Also called nuclear isomerism. Physics. the relation of two or more nuclides that have the same atomic number and mass number but different energy levels and half-lives.
3. Chemistry, Physics. the phenomenon characterized by such a relation.
4. the state or condition of being isomerous.
Origin:
1830–40; isomer(ic) + -ism
Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.
Cite This Source
Sponsored Links Isomers at Amazon
Huge Selection at Great Low Prices Vitamins, Personal Care and More
Amazon.com/health
Isomers
Bargain Prices. Smart Deals. Save on Isomers!
Shopzilla.com
i·som·er·ism     (ī-sŏm'ə-rĭz'əm)  Pronunciation Key 
n.  
  1. The phenomenon of the existence of isomers.
  2. The complex of chemical and physical phenomena characteristic of or attributable to isomers.
  3. The state or condition of being an isomer.

The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2006 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
isomerism

noun
the state of being an isomer; the complex of chemical and physical phenomena characteristic of isomers 

WordNet® 3.0, © 2006 by Princeton University.
Cite This Source

Isomerism

I*som"er*ism\, n. (Chem.) The state, quality, or relation, of two or more isomeric substances.

Physical isomerism (Chem.), the condition or relation of certain (metameric) substances, which, while chemically identical (in that they have the same composition, the same molecular weights, and the same ultimate constitution), are yet physically different, as in their action on polarized light, as dextro- and l[ae]vo-tartaric acids. In such compounds there is usually at least one unsymmetrical carbon atom. See Unsymmetrical.

Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
Cite This Source
Share :Share This: digg.comShare This: www.stumbleupon.comShare This: del.icio.usShare This: FacebookShare This: favorites.live.comShare This: www.technorati.comShare This: furl.netShare This: www.myspace.comShare This: www.google.comShare This: myweb2.search.yahoo.comShare This: myjeeves.ask.com
Search another word or see isomerism on Thesaurus | Reference | Translate
Sponsored Links Isomers at Amazon
Huge Selection at Great Low Prices Vitamins, Personal Care and More
Amazon.com/health
Isomers
Bargain Prices. Smart Deals. Save on Isomers!
Shopzilla.com
Get your FREE Subscription to Dictionary.com Word of the Day
The FREE Dictionary.com Toolbar
Dictionary Thesaurus Reference
The answers are right on your browser and just a click away with Dictionary.com Toolbar.