Allotropism
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 Webster]

Note: Thus, carbon occurs crystallized in octahedrons and other related forms, in a state of extreme hardness, in the diamond; it occurs in hexagonal forms, and of little hardness, in black lead; and again occurs in a third form, with entire softness, in lampblack and charcoal. In some cases, one of these is peculiarly an active state, and the other a passive one. Thus, ozone is an active state of oxygen, and is distinct from ordinary oxygen, which is the element in its passive state. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • allotropism — n. [Gr. allos, other; tropos, turn] The propensity of attraction of certain cells or structures; allotropy …   Dictionary of invertebrate zoology

  • allotropism — noun The ability (of an element) to exist in more than one physical form without change of state. See Also: allotrope, allotropic, allotropical, allotropy, allotropous …   Wiktionary

  • allotropism — al·lot·ro·pism (ə lotґrə piz″əm) [allo + tropism] the existence of a substance in two or more distinct forms (allotropic forms) with distinct physical properties, e.g., graphite and diamond, allotropic forms of carbon …   Medical dictionary

  • allotropism — n. existence of a chemical element in two or more different forms (Chemistry) …   English contemporary dictionary

  • allotropism — al·lot·ro·pism …   English syllables

  • allotropism — noun the phenomenon of an element existing in two or more physical forms • Syn: ↑allotropy • Derivationally related forms: ↑allotropical, ↑allotropic, ↑allotropical (for: ↑allotropy), ↑allotropic …   Useful english dictionary

  • allotropism, allotropy — The existence of certain elements, in several forms differing in physical properties; e.g., carbon black, graphite, and diamond are all pure carbon. [allo + G. tropos, a turning] …   Medical 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

  • allotropic — adjective of or related to or exhibiting allotropism carbon and sulfur and phosphorus are allotropic elements • Syn: ↑allotropical • Pertains to noun: ↑allotropy (for: ↑allotropical), ↑allotropy …   Useful english dictionary

  • allotropical — adjective of or related to or exhibiting allotropism carbon and sulfur and phosphorus are allotropic elements • Syn: ↑allotropic • Pertains to noun: ↑allotropy, ↑allotropy (for: ↑allotropic) …   Useful english dictionary

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