Definition of: symmetrical

(si·met′ri·kəl) adjective
1. Exhibiting symmetry; having harmonious proportions or a correspondence in shape and size of parts; well–balanced; regular: a symmetrical structure.
2. Biol. Having parts or organs on one side corresponding to those on the other.
3. Bot. Regular as to number or shape of parts: said especially of a flower when the parts or divisions in each cycle (that is, the sepals, petals, stamens, and pistils) are of the same number or multiples of the same.
4. Chem. Denoting an arrangement of atoms of a molecule at equal relative intervals when graphically represented.
5. Med. Affecting corresponding organs or parts similarly. Also sym·met′ric. [<SYMMETRY]
—sym·met′ri·cal·ly adverb
—sym·met′ri·cal·ness noun