|—n , pl -tries|
|1.||similarity, correspondence, or balance among systems or parts of a system|
|2.||maths See symmetrical an exact correspondence in position or form about a given point, line, or plane|
|3.||beauty or harmony of form based on a proportionate arrangement of parts|
|4.||physics the independence of a property with respect to direction; isotropy|
|[C16: from Latin symmetria, from Greek summetria proportion, from |
symmetry sym·me·try (sĭm'ĭ-trē)
Exact correspondence of form and constituent configuration on opposite sides of a dividing line or plane or about a center or an axis.
in biology, the repetition of the parts in an animal or plant in an orderly fashion. Specifically, symmetry refers to a correspondence of body parts, in size, shape, and relative position, on opposite sides of a dividing line or distributed around a central point or axis. With the exception of radial symmetry (see below), external form has little relation to internal anatomy, since animals of very different anatomical construction may have the same type of symmetry
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