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

  • adjective Of or exhibiting symmetry.

from The Century Dictionary.

  • In organic chemistry, noting compounds which contain atoms or groups at equal relative intervals in the molecule: thus, for example, chlorobenzene, which has the formula and ethylene chlorid, ClCH2.CH2C1, are both symmetrical compounds.
  • Well-proportioned in its parts; having its parts in due proportion as to dimensions; harmonious: as, a symmetrical building; his form was very symmetrical.
  • Composed of two parts whose geometrical relations to one another are those of a body and its image in a plane mirror, every element of form having a corresponding element upon the opposite side of a median or symmetral plane, upon one continued perpendicular to that plane and at the same distance from it: said also of each part relatively to the corresponding part: as, the right arm is symmetrical with the left.
  • In a weakened sense, in zoology, having similar parts in reversed repetition on the two sides of a median plane, or meson, through an axis of the body, generally the longitudinal. Not all the parts need so correspond, nor need those which do correspond be equal.
  • Composed of parts or determined by elements similarly related to one another, and either having no determinate order (as the three lines which by their junction form a summit of a cube) or else in regular cyclical order: said also of the parts in their mutual relation.
  • Specifically, in botany, of flowers, numerically regular; having the number of members the same in all the cycles or series of organs—that is, of sepals, petals, stamens, and carpels: same as isomerous, except that in a symmetrical flower there may be more than one set of the same kind of organs. Compare regular, a., 7.

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

  • adjective Involving or exhibiting symmetry; proportional in parts; having its parts in due proportion as to dimensions.
  • adjective (Biol.) Having the organs or parts of one side corresponding with those of the other; having the parts in two or more series of organs the same in number; exhibiting a symmetry. See Symmetry, 2.
  • adjective Having an equal number of parts in the successive circles of floral organs; -- said of flowers.
  • adjective Having a likeness in the form and size of floral organs of the same kind; regular.
  • adjective (Math.) Having a common measure; commensurable.
  • adjective Having corresponding parts or relations.

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

  • adjective Exhibiting symmetry; having harmonious or proportionate arrangement of parts; having corresponding parts or relations

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

  • adjective exhibiting equivalence or correspondence among constituents of an entity or between different entities
  • adjective having similarity in size, shape, and relative position of corresponding parts


Sorry, no etymologies found.



Log in or sign up to get involved in the conversation. It's quick and easy.