micelle

micellar, adj.micellarly, adv.
/mi sel"/, n.
Physical Chem. an electrically charged particle formed by an aggregate of molecules and occurring in certain colloidal electrolyte solutions, as those of soaps and detergents.
[1880-85; < NL micella, equiv. to L mic(a) crumb, grain + -ella -ELLE]

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      in physical chemistry, a loosely bound aggregation of several tens or hundreds of atoms, ions (electrically charged atoms), or molecules, forming a colloidal particle—i.e., one of a number of ultramicroscopic particles dispersed through some continuous medium. Micelles are important in the chemistry of surfaces—e.g., the power of soap solutions to disperse organic compounds insoluble or only slightly soluble in water is explained as a property of micelles.

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Universalium. 2010.

Look at other dictionaries:

  • micelle — [ misɛl ] n. f. • v. 1900; du lat. mica « parcelle » ♦ Chim., phys. Particule formée d un agrégat de molécules en solution colloïdale. ⇒ colloïde. Adj. MICELLAIRE , 1922 . ⊗ HOM. Missel. ● micelle nom féminin ( …   Encyclopédie Universelle

  • micelle — [mīsel′ə, misel′ə] n. pl. micellae [mī sel′ē, mi sel′ēmī sel′, misel′] n. [ModL micella, dim. < L mica, a grain, crumb: see MICA] 1. Biol. a submicroscopic structural unit composed of a group of molecules, as in living protoplasm, starch… …   English World dictionary

  • Micelle — Cross section view of the structures that can be formed by phospholipids in aqueous solutions …   Wikipedia

  • Micelle — Schéma d une micelle directe formée par des phospholipides en solution aqueuse …   Wikipédia en Français

  • micelle — noun /maɪˈsɛl,məˈsɛl/ a colloidal aggregate, in a simple geometric form, of a specific number of amphipathic molecules which forms at a well defined concentration, called the critical micelle concentration …   Wiktionary

  • micelle — micelė statusas T sritis chemija apibrėžtis Elektriškai neutrali koloidinio tirpalo dalelė. atitikmenys: angl. micelle rus. мицелла …   Chemijos terminų aiškinamasis žodynas

  • micelle — noun Etymology: New Latin micella, from Latin mica Date: 1881 a unit of structure built up from polymeric molecules or ions: as a. an ordered region in a fiber (as of cellulose or rayon) b. a molecular aggregate that constitutes a colloidal… …   New Collegiate Dictionary

  • Micelle — Mizelle in Wasserlösung Mizellen (von lat. mica = Klümpchen, kleiner Bissen), auch Assoziationskolloide genannt, sind Aggregate (Assoziate) aus amphiphilen Molekülen bzw. grenzflächenaktiven Substanzen, die sich in einem Dispersionsmedium (meist… …   Deutsch Wikipedia

  • micelle — n.; pl. ae [L. micarius, crumbs] A supermolecular colloid particle, often an orderly packet of chain molecules in parallel arrangement …   Dictionary of invertebrate zoology

  • micelle — One of the possible ways in which amphipathic molecules may be arranged; a spherical structure in which all the hydrophobic portions of the molecules are inwardly directed, leaving the hydrophilic portions in contact with the surrounding aqueous… …   Dictionary of molecular biology

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