a·sym·met·ric (ā′sĭ-mĕtrĭk) also a·sym·met·ri·cal (-rĭ-kəl)
a. Having no balance or symmetry: an asymmetric design.
b. Uneven in distribution.
a. Existing or occurring between two incommensurate entities, especially to the detriment of one.
b. 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: asymmetric warfare.
3. 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.
a·symme·try (ā-sĭmĭ-trē) adv.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.