isomer

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i·so·mer

 (ī′sə-mər)
n.
1. Chemistry Any of two or more substances that have the same molecular formula but differ in the way their atoms are connected to each other, in the spatial orientation of their atoms, or, in the case of large molecules such as DNA, in their molecular topology.
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- in Indo-European roots.]

i′so·mer′ic (-mĕr′ĭk) adj.
i′so·mer′i·cal·ly adv.

isomer

(ˈaɪsəmə)
n
1. (Elements & Compounds) chem a compound that exhibits isomerism with one or more other compounds
2. (General Physics) physics a nuclide that exhibits isomerism with one or more other nuclides
isomeric adj

i•so•mer

(ˈaɪ sə mər)

n.
a chemical compound or nuclide that displays isomerism.
[1865–70; < Swedish (1830) < Greek isomerḗs equally divided =iso- iso- + -merēs, adj. derivative of méos part, division]

i·so·mer

(ī′sə-mər)
One of two or more compounds composed of the same chemical elements in the same proportions but having a different arrangement of the atoms. Isomers differ from one another in at least one physical or chemical property. Lactose and sucrose are isomers.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.isomer - a compound that exists in forms having different arrangements of atoms but the same molecular weight
chemical compound, compound - (chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight
Translations

isomer

[ˈaɪsəməʳ] Nisómero m

isomer

n (Chem) → Isomer(e) nt

isomer

[ˈaɪsəməʳ] nisomero
References in periodicals archive ?
A highly isomerised GTL diesel--representative of an extreme 'winter grade' GTL diesel.
The isomerised or recemised forms of CTX-I end products reflects structural aspects of bone matrix related to its strength [17].
y otros cuatro autores; Improving the stability Z-isomers in isomerised tomato extracts, Food Chemistry: 112, 156-161 (2008)