optical isomer
Isomer I"so*mer ([imac]"s[-o]*m[~e]r), n. [See {Isomeric}.] (Chem.) A compound which is isomeric with another body or compound; a compound having the same chemical composition as another compound; a member of an isomeric series. [1913 Webster +PJC]

Note: An isomer may be a {structural isomer}, in which some of the atoms are bonded to different atoms (as in {CH3.CH2.NH2} and {CH3.NH.CH3}), or an {optical isomer}, in which the number and types of chemical bonds are identical, but the arrangement of the atoms in three-dimensional space is different; the latter are also called {stereoisomers}. [PJC]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • optical isomer — n one of two or more forms of a compound exhibiting optical isomerism …   Medical dictionary

  • optical isomer — optinis izomeras statusas T sritis fizika atitikmenys: angl. optical isomer vok. optische Isomer, n rus. оптический изомер, m pranc. isomère optique, m …   Fizikos terminų žodynas

  • optical isomer — noun Chemistry each of two or more isomers with molecules which are mirror images of each other and typically differ in optical activity. Derivatives optical isomerism noun …   English new terms dictionary

  • optical isomer — Chem. any of two or more isomers exhibiting optical isomerism. [1890 95] * * * …   Universalium

  • optical isomer — noun Any one of a number of compounds that exhibit optical isomerism …   Wiktionary

  • optical isomer — noun : one of two or more forms of a compound exhibiting optical isomerism …   Useful english dictionary

  • Isomer — I so*mer ([imac] s[ o]*m[ e]r), n. [See {Isomeric}.] (Chem.) A compound which is isomeric with another body or compound; a compound having the same chemical composition as another compound; a member of an isomeric series. [1913 Webster +PJC] Note …   The Collaborative International Dictionary of English

  • isomer — noun /ˈaɪ.sə.mə,ˈaɪ.sə.mɚ/ a) Any of two or more compounds with the same molecular formula but with different structure. b) Any of two or more atomic nuclei with the same mass number and atomic number but with different radioactive properties.… …   Wiktionary

  • Optical brightener — Optical brighteners, optical brightening agents (OBAs), fluorescent brightening agents (FBAs) or fluorescent whitening agents (FWAs) are dyes that absorb light in the ultraviolet and violet region (usually 340 370 nm) of the electromagnetic… …   Wikipedia

  • Isomer — This article is about the chemical concept. For isomerism of atomic nuclei, see nuclear isomer. In chemistry, isomers (from Greek ἰσομερής, isomerès; isos = equal , méros = part ) are compounds with the same molecular formula but different… …   Wikipedia

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