'Bilaterality' definitions:

Definition of 'bilaterality'

From: WordNet
noun
The property of being symmetrical about a vertical plane [syn: bilaterality, bilateralism, bilateral symmetry]

Definition of 'Bilaterality'

From: GCIDE
  • Bilaterality \Bi*lat`er*al"i*ty\, n. State of being bilateral. [1913 Webster]