isomer

i·so·mer
I1S1O1M3E1R1
UK/ˈaɪ.sə.mə/US/ˈaɪ.sə.mɚ/

noun

Any of two or more compounds with the same molecular formula but with different structure.

UncommonScrabble 8

Meanings

nounisomer (plural isomers)

plural isomers · alternative archaic isomere

  1. physicalchemistryAny of two or more compounds with the same molecular formula but with different structure.
  2. nuclear physicsAny of two or more atomic nuclei with the same mass number and atomic number but with different radioactive properties.

    Synonyms: nuclear isomer

Synonyms & antonyms

nounAny of two or more atomic nuclei with the same mass number and atomic number but with different radioactive properties.

Origin

Translations

Catalan isòmer
  • isòmerchemistry: compounds
Chinese Cantonese 異構體 /异构体
  • 異構體 /异构体 (ji⁶ kau³ tai², ji⁶ gau³ tai²)chemistry: compounds
Chinese Mandarin 異構體 /异构体, 同分異構體 /同分异构体
  • 異構體 /异构体 (yìgòutǐ)chemistry: compounds
  • 同分異構體 /同分异构体 (tóngfēnyìgòutǐ)chemistry: compounds
  • 同核異能素 /同核异能素 (tónghéyìnéngsù)physics: atomic nuclei
Czech izomer
  • izomerchemistry: compounds
Danish isomeri
  • isomerichemistry: compounds
Esperanto izomero
  • izomerochemistry: compounds
Finnish isomeeri
  • isomeerichemistry: compounds
French isomère, isomère
  • isomèrechemistry: compounds
  • isomèrephysics: atomic nuclei
German Isomer, Kernisomer
  • Isomerchemistry: compounds
  • Kernisomerphysics: atomic nuclei
Greek ισομερές, ισομερές
  • ισομερές (isomerés)chemistry: compounds
  • ισομερές (isomerés)physics: atomic nuclei
Hindi समावयव
  • समावयव (samāvyav)chemistry: compounds
Hungarian izomer
  • izomerchemistry: compounds
Indonesian isomer
  • isomerchemistry: compounds
Irish isiméir, isiméir
  • isiméirchemistry: compounds
  • isiméirphysics: atomic nuclei
Italian isomero, isomero
  • isomerochemistry: compounds
  • isomerophysics: atomic nuclei
Japanese 異性体, 異性核
  • 異性体 (iseitai)chemistry: compounds
  • 異性核 (iseikaku)physics: atomic nuclei
Malay isomer
  • isomerchemistry: compounds
Māori poinanaha
  • poinanahachemistry: compounds
Persian ایزومر
  • ایزومر (izomer)chemistry: compounds
Polish izomer, izomer
  • izomerchemistry: compounds
  • izomerphysics: atomic nuclei
Portuguese isômero
  • isômerochemistry: compounds
Russian изоме́р, изоме́р
  • изоме́р (izomér)chemistry: compounds
  • изоме́р (izomér)physics: atomic nuclei
Spanish isómero
  • isómerochemistry: compounds
Swedish isomer
  • isomerchemistry: compounds
Tagalog kasanyo
  • kasanyochemistry: compounds
Turkish izomer
  • izomerchemistry: compounds
Yiddish איסאָמער
  • איסאָמער (isomer)chemistry: compounds

Rhymes & wordplay

Anagrams

Cite this entry
APA

isomer. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/isomer

MLA

“isomer.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/isomer. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “isomer,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/isomer.

Source: isomer on Wiktionary, CC BY-SA 4.0.