Dictionary
Thesaurus
Encyclopedia
Translator
Web

isomer

 - 4 dictionary results

i⋅so⋅mer

[ahy-suh-mer]
–noun
1. Chemistry. a compound displaying isomerism with one or more other compounds.
2. Also called nuclear isomer. Physics. a nuclide that exhibits isomerism with one or more other nuclides.

Origin:
1865–70; back formation from isomeric
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To isomer
i·so·mer   (ī'sə-mər)   
n.  
  1. Chemistry Any of two or more substances that are composed of the same elements in the same proportions but differ in properties because of differences in the arrangement of atoms.

  2. Physics Any of two or more nuclei with the same mass number and atomic number that have different radioactive properties and can exist in any of several energy states for a measurable period of time.


[Greek īsomerēs, having equal share : īso-, iso- + meros, part, share; see (s)mer-2 in Indo-European roots.]
i'so·mer'ic (-měr'ĭk) adj., i'so·mer'i·cal·ly adv.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
Medical Dictionary

Main Entry: iso·mer
Pronunciation: 'I-s&-m&r
Function: noun
1 : any of two or more compounds, radicals, or ions that contain the samenumber of atoms of the same elements but differ in structural arrangement and properties
2 : a nuclide isomeric with one or more others
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
Cite This Source
Medical Dictionary

isomer i·so·mer (ī'sə-mər)
n.

  1. Any of two or more substances that are composed of the same elements in the same proportions but differ in properties because of differences in the arrangement of atoms.

  2. Any of two or more nuclei with the same mass number and atomic number that have different radioactive properties and can exist in any of several energy states for a measurable period of time.


i'so·mer'ic (-měr'ĭk) adj.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
Search another word or see isomer on Thesaurus | Reference
FacebookTwitterFollow us: