The property of being symmetrical about a vertical plane.

synonyms: bilateralism, bilaterality.

Roget 242: symmetry, shapeliness, finish; beauty etc. 845; proportion, eurythmy^†, uniformity, parallelism; bilateral symmetry, trilateral symmetry, multilateral symmetry; centrality etc. 222.    arborescence^†, branching, ramification; arbor vitae.    ... show more