a. - Involving or exhibiting symmetry; proportional in parts; having its parts in due proportion as to dimensions; as, a symmetrical body or building.
a. - 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.
a. - Having an equal number of parts in the successive circles of floral organs; -- said of flowers.
a. - Having a likeness in the form and size of floral organs of the same kind; regular.
a. - Having a common measure; commensurable.
a. - Having corresponding parts or relations.