isomer

See also: Isomer

English

WOTD – 3 May 2008

Three structural isomers.

Etymology

iso- +‎ -mer

Pronunciation

• (Received Pronunciation) IPA^(key): /ˈaɪ.sə.mə/
• (US) enPR: ī'səmər, IPA^(key): /ˈaɪ.sə.mɚ/

• Audio (US)

  (file)

• Audio (AU)

  (file)

• Hyphenation: i‧so‧mer

Noun

isomer (plural isomers)

1. (chemistry) Any of two or more compounds with the same molecular formula but with different structure.
2. (physics) Any of two or more atomic nuclei with the same mass number and atomic number but with different radioactive properties.

Synonyms

• (physics: atomic nuclei): nuclear isomer

Derived terms

• atropisomer
• cis-trans isomer
• endo-isomer
• exo-isomer
• geoisomer
• geometric isomer
• isomerase
• isomerate
• isomer bomb
• isomeric
• isomerism
• isomerize
• isomeromorphism
• metastable isomer
• nuclear isomer
• optical isomer
• photoisomer
• positional isomer
• regioisomer
• stereoisomer
• structural isomer
• topoisomer
• valence isomer

 

Translations

chemistry: compounds

• Catalan: isòmer m
• Chinese:

  Cantonese: 異構體, 异构体 (ji⁶ kau³ tai², ji⁶ gau³ tai²)

  Mandarin: 異構體 (zh), 异构体 (zh) (yìgòutǐ)

• Czech: izomer (cs) m
• Danish: isomeri c
• Esperanto: izomero
• Finnish: isomeeri (fi)
• French: isomère (fr) m
• Galician: isómero m
• German: Isomer (de) n
• Greek: ισομερές (el) n (isomerés)
• Hungarian: izomer

• Ido: izomero (io)
• Irish: isiméir f
• Italian: isomero (it) m
• Japanese: 異性体 (いせいたい, iseitai)
• Maori: poinanaha
• Polish: izomer m
• Portuguese: isômero m
• Russian: изоме́р (ru) m (izomér)
• Spanish: isómero (es)
• Swedish: isomer (sv) c
• Tagalog: kasanyo
• Turkish: izomer (tr)
• Yiddish: איסאָמער‎ m (isomer)

physics: atomic nuclei

• French: isomère (fr) m
• German: Kernisomer n
• Greek: ισομερές (el) n (isomerés)
• Irish: isiméir f

• Italian: isomero (it)
• Japanese: 異性核 (いせいかく, iseikaku)
• Polish: izomer m
• Russian: изоме́р (ru) m (izomér)

See also

• isotope

Anagrams

• Mosier, moires, moirés, rimose