noun
the property of being symmetrical about a vertical plane
• Syn: ↑bilaterality, ↑bilateralism
• Derivationally related forms: ↑bilateral (for: ↑bilaterality)
• Hypernyms: ↑symmetry, ↑symmetricalness, ↑correspondence, ↑balance
* * *
the fact of the two halves of sth on either side of a particular line being exactly the same
Useful english dictionary. 2012.