from The Century Dictionary.

  • noun Allotropical variation; allotropy.
  • noun The occurrence of more than one form of a chemical element with difference in physical properties is explained, in the light of the atomic theory, as depending on a difference in the number, and possibly in the arrangement, of the atoms which go to make up the molecule. Thus it is believed that in the more common form of oxygen there are two, but in the allotropic ozone three, atoms to the molecule.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Chem.) The property of existing in two or more conditions which are distinct in their physical or chemical relations.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun chemistry The ability (of an element) to exist in more than one physical form without change of state.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun the phenomenon of an element existing in two or more physical forms


Sorry, no etymologies found.



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