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Symmet"rical (), a.[Cf. F. symtrique. See Symmetry.] 1. Involving or exhibiting symmetry; proportional in parts; having its parts in due proportion as to dimensions; as, a symmetrical body or building. 2. (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. 3. (Bot.) (a) Having an equal number of parts in the successive circles of floral organs; -- said of flowers. (b) Having a likeness in the form and size of floral organs of the same kind; regular. 4. (Math.) Having a common measure; commensurable. (b) Having corresponding parts or relations. A curve or a plane figure is symmetrical with respect to a given line, and a line, surface, or solid with respect to a plane, when for each point on one side of the line or plane there is a corresponding point on the other side, so situated that the line joining the two corresponding points is perpend
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