isomer

See also: Isomer

English

WOTD – 3 May 2008

Three structural isomers.

Alternative forms

• isomere (archaic)

Etymology

From iso- +‎ -mer.

Pronunciation

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

• Audio (US):

  (file)

• Audio (General Australian):

  (file)

• Hyphenation: i‧so‧mer

Noun

isomer (plural isomers)

1. (physical chemistry) Any of two or more compounds with the same molecular formula but with different structure.
2. (nuclear 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

Related terms

• isoform
• isotope

Translations

chemistry: compounds

• Catalan: isòmer m
• Chinese:

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

  Mandarin: 異構體 / 异构体 (zh) (yìgòutǐ), 同分異構體 / 同分异构体 (zh) (tóngfēnyìgòutǐ)

• 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)
• Hindi: समावयव m (samāvyav)
• Hungarian: izomer (hu)
• Ido: izomero (io)
• Indonesian: isomer (id)
• Irish: isiméir f
• Italian: isomero (it) m
• Japanese: 異性体 (いせいたい, iseitai)
• Kazakh: изомер (izomer)
• Khmer: អ៊ីសូមែ (ʼiisoumɛɛ)
• Malay: isomer
• Maori: poinanaha
• Persian: ایزومر (fa) (izomer)
• Polish: izomer (pl) 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

• Chinese:

  Mandarin: 同核異能素 / 同核异能素 (tónghéyìnéngsù)

• 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 (pl) m
• Russian: изоме́р (ru) m (izomér)

Anagrams

• Mosier, moires, moirés, rimose

Indonesian

Etymology

Internationalism

Pronunciation

• IPA^(key): /i.ˈso.mɛr/
• Rhymes: -mɛr
• Hyphenation: i‧so‧mer

Noun

isomer (plural isomer-isomer)

1. (organic chemistry, physics) isomer

Further reading

• “isomer” in Kamus Besar Bahasa Indonesia, Jakarta: Agency for Language Development and Cultivation – Ministry of Education, Culture, Research, and Technology of the Republic of Indonesia, 2016.

Welsh

Etymology

Internationalism

Noun

isomer m (plural isomerau)

1. (chemistry) isomer

Related terms

• isomer adeileddol (“structural isomer”)
• isomer optegol (“optical isomer”)
• isomeredd (“isomerism”)