Symmetry

n.	1.	A due proportion of the several parts of a body to each other; adaptation of the form or dimensions of the several parts of a thing to each other; the union and conformity of the members of a work to the whole.
	2.	(Biol.) The law of likeness; similarity of structure; regularity in form and arrangement; orderly and similar distribution of parts, such that an animal may be divided into parts which are structurally symmetrical.
	3.	(Bot.) Equality in the number of parts of the successive circles in a flower. Axis of symmetry (Geom.) See under Axis. Respective symmetry that disposition of parts in which only the opposite sides are equal to each other.

Noun	1.	symmetry - (mathematics) an attribute of a shape or relation; exact correspondence of form on opposite sides of a dividing line or plane Synonyms: symmetricalness, correspondence, balance Antonyms: asymmetry, imbalance - (mathematics) a lack of symmetry
	2.	symmetry - balance among the parts of something Synonyms: proportion
	3.	symmetry - (physics) the property of being isotropic; having the same value when measured in different directions Synonyms: isotropy

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