allotropy

allotropy
the property possessed by certain elements to exist in two or more distinct forms that are chemically identical but have different physical properties. In the case of iron the crystal structure has one form at room temperature and another at high temperature. When heated above 910 deg C the atomic structure changes from body centered cubic to face centered cubic but reverts again when cooled. The allotropy of iron modifies the solubility of carbon, and it is because of this that steel can be hardened.

Mechanics glossary. 2013.

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  • Allotropy — (Gr. allos , other, and tropos , manner) is a behavior exhibited by certain chemical elements: these elements can exist in two or more different forms, known as allotropes of that element. In each different allotrope, the element s atoms are… …   Wikipedia

  • allotropy — allotropy. См. аллотропия. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • Allotropy — Allotropy. См. Аллотропия. (Источник: «Металлы и сплавы. Справочник.» Под редакцией Ю.П. Солнцева; НПО Профессионал , НПО Мир и семья ; Санкт Петербург, 2003 г.) …   Словарь металлургических терминов

  • allotropy — [ə lä′trə pē] n. [< Gr allotropos, of or in another manner < allos, other + tropos, way, turn: see TROPE] the property that certain chemical elements and compounds have of existing in two or more different forms, as carbon in the form of… …   English World dictionary

  • Allotropy — Allotropism Al*lot ro*pism, Allotropy Al*lot ro*py, n. [Gr. ? other + direction, way, ? to turn: cf. F. allotropie.] (Chem.) The property of existing in two or more conditions which are distinct in their physical or chemical relations. [1913… …   The Collaborative International Dictionary of English

  • allotropy — /euh lo treuh pee/, n. Chem. a property of certain elements, as carbon, sulfur, and phosphorus, of existing in two or more distinct forms; allomorphism. Also, allotropism. [1840 50; ALLO + TROPY] * * * ▪ chemistry       the existence of a… …   Universalium

  • allotropy — alotropija statusas T sritis chemija apibrėžtis Elemento gebėjimas sudaryti kelias vienines medžiagas. atitikmenys: angl. allotropy rus. аллотропия …   Chemijos terminų aiškinamasis žodynas

  • allotropy — alotropija statusas T sritis fizika atitikmenys: angl. allotropy vok. Allotropie, f rus. аллотропия, f pranc. allotropie, f; énantiotropie, f …   Fizikos terminų žodynas

  • allotropy — allotrope ► NOUN Chemistry ▪ each of two or more different physical forms in which an element can exist (e.g. graphite, charcoal, and diamond as forms of carbon). DERIVATIVES allotropic adjective allotropy noun. ORIGIN from Greek allotropos of… …   English terms dictionary

  • allotropy — noun (plural pies) Date: 1850 the existence of a substance and especially an element in two or more different forms (as of crystals) usually in the same phase • allotropic adjective …   New Collegiate Dictionary

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