from The American Heritage® Dictionary of the English Language, 5th Edition.

  • adjective Having no balance or symmetry.
  • adjective Uneven in distribution.
  • adjective Existing or occurring between two incommensurate entities, especially to the detriment of one.
  • adjective Characterized by an imbalance in power between two opponents in an armed conflict, especially one in which a weaker force uses unconventional means, such as guerilla or terrorist tactics.
  • adjective Chemistry Of or relating to a carbon atom having four different atoms or structural groups attached to it, resulting in an unbalanced spatial arrangement of atoms in a molecule, so that the molecule cannot be superimposed on its mirror image; chiral.

from The Century Dictionary.

  • Destitute of symmetry; not symmetrical.

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

  • adjective obsolete Incommensurable.
  • adjective Not symmetrical; wanting proportion; esp., not bilaterally symmetrical.

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

  • adjective geometry, general Of a shape, not symmetric.
  • adjective cryptography Not involving a mutual exchange of keys between the sender and receiver.

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

  • adjective characterized by asymmetry in the spatial arrangement or placement of parts or components


from Wiktionary, Creative Commons Attribution/Share-Alike License

A- + symmetric, as Ancient Greek ἀσυμμετρία (asymmetria), "disproportion", "deformity".


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