Usually means: Molecules with same formula, different arrangement.
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We found 33 dictionaries that define the word Isomer:

General (21 matching dictionaries)
  1. isomer: Merriam-Webster
  2. isomer: Oxford Learner's Dictionaries
  3. isomer: Collins English Dictionary
  4. isomer: Vocabulary.com
  5. Isomer, isomer: Wordnik
  6. isomer: Cambridge Advanced Learner's Dictionary
  7. isomer: Wiktionary
  8. isomer: Webster's New World College Dictionary, 4th Ed.
  9. isomer: The Wordsmyth English Dictionary-Thesaurus
  10. isomer: Dictionary.com
  11. Isomer (Proarticulata), Isomer: Wikipedia, the Free Encyclopedia
  12. Isomer: Online Plain Text English Dictionary
  13. isomer: Webster's Revised Unabridged, 1913 Edition
  14. isomer: Rhymezone
  15. Isomer: AllWords.com Multi-Lingual Dictionary
  16. isomer: FreeDictionary.org
  17. isomer: Mnemonic Dictionary
  18. isomer: TheFreeDictionary.com
  19. isomer: Infoplease Dictionary

Computing (1 matching dictionary)
  1. isomer: Encyclopedia

Medicine (5 matching dictionaries)
  1. isomer: Merriam-Webster Medical Dictionary
  2. Dorland's Illustrated Medical Dictionary (No longer online)
  3. online medical dictionary (No longer online)
  4. isomer: Dictionary of Cancer Terms
  5. isomer: Medical dictionary

Science (3 matching dictionaries)
  1. Isomer: Eric Weisstein's World of Chemistry
  2. Isomer: Extragalactic Astronomy
  3. General Chemistry Online (No longer online)

Tech (3 matching dictionaries)
  1. Glossary of Meteorology (No longer online)
  2. Explosives (No longer online)
  3. Washington State Definitions and Abbreviations of Vetrinary Terms (No longer online)

(Note: See isomers as well.)

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Definitions from Wiktionary (isomer)

▸ noun:  (physical chemistry) Any of two or more compounds with the same molecular formula but with different structure.
▸ noun:  (nuclear physics) Any of two or more atomic nuclei with the same mass number and atomic number but with different radioactive properties.

Similar:
isomere, structural isomer, isomerism, structural isomerism, stereoisomer, isomerization, isomerisation, regioisomer, isotopomer, optical isomer, more...

Opposite:
non-isomer, isomerism-free, isomerism-lacking

Phrases:
isomer shift, optical isomer, structural isomer, geometric isomer, geometrical isomer, more...

Adjectives:
optical, active, trans, stable, cis, single, pure, structural, major, dextrorotatory, inactive

▸ Words similar to Isomer

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Similar:
isomere, structural isomer, isomerism, structural isomerism, stereoisomer, isomerization, isomerisation, regioisomer, isotopomer, optical isomer, more...

Opposite:
non-isomer, isomerism-free, isomerism-lacking

Phrases:
isomer shift, optical isomer, structural isomer, geometric isomer, geometrical isomer, positional isomer, exo isomer, nuclear isomer, constitutional isomer, conformational isomer, metastable isomer, more...

Adjectives:
optical, active, trans, stable, cis, single, pure, structural, major, dextrorotatory, inactive



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