Twinning Twin"ning, n. (Crystallog.) The assemblage of two or more crystals, or parts of crystals, in reversed position with reference to each other in accordance with some definite law; also, rarely, in artificial twinning (accomplished for example by pressure), the process by which this reversal is brought about. [1913 Webster]

{Polysynthetic twinning}, repeated twinning of crystal lamell[ae], as that of the triclinic feldspars.

{Repeated twinning}, twinning of more than two crystals, or parts of crystals.

{Twinning axis}, {Twinning plane}. See the Note under {Twin}, n. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Twinning — (making a twin of) may have the following meanings:* In biology and agriculture, producing two offspring (i.e., twins) at a time, or having a tendency to do so; * City and town twinning; * eTwinning, a collaboration between schools in which two… …   Wikipedia

  • twinning — [twin′iŋ] n. 1. the bearing of twins 2. a pairing or coupling 3. the formation of a twin crystal or crystals …   English World dictionary

  • Twinning — Als Twinning wird das von der Europäischen Union finanzierte Programm zum Auf und Ausbau öffentlicher Strukturen („Institution Building“) in Beitrittskandidadaten der Europäischen Union bezeichnet. Dabei gilt es, den acquis communautaire… …   Deutsch Wikipedia

  • twinning — /twin ing/, n. 1. the bearing of two children at one birth. 2. the coupling of two persons or things; union. 3. Crystall. the union of crystals to form a twin. [1565 75; TWIN1 + ING1] * * * ▪ crystallography       in crystallography, regular… …   Universalium

  • Twinning — Recorded in several forms as shown below, this surname is English and pre medieval in origin. It is locational and derives from Twyning , a village in Gloucestershire, near Tewkesbury. The placename is recorded in the Saxon Charters of 814 as… …   Surnames reference

  • Twinning — Twin Twin, v. i. [imp. & p. p. {Twinned}; p. pr. & vb. n. {Twinning}.] 1. To bring forth twins. Tusser. [1913 Webster] 2. To be born at the same birth. Shak. [1913 Webster] …   The Collaborative International Dictionary of English

  • twinning — bikristalų susidarymas statusas T sritis radioelektronika atitikmenys: angl. twinning vok. Zwillingsbildung, f rus. двойникование, n pranc. maclage, m …   Radioelektronikos terminų žodynas

  • twinning — 1. noun a) action of the verb to twin b) giving birth to twins 2. adjective biparous …   Wiktionary

  • twinning — Production of equivalent structures by division; the tendency of divided parts to assume symmetric relations. * * * twin·ning twin iŋ n the bearing of twins * * * twin·ning (twinґing) 1. the simultaneous production of two (or more) offspring. 2.… …   Medical dictionary

  • twinning — Смотри Двойникование …   Энциклопедический словарь по металлургии

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