n. Having a matching arrangement on each of two sides.
n. The policy of having bilateral agreements between two countries (as opposed to unilateralism and multilateralism).
The Century Dictionary and Cyclopedia
n. The state or quality of being bilateral; bilateral symmetry.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. the property of being symmetrical about a vertical plane
Word Usage
"There is ample evidence to support this hypothesis, including recent genomic discoveries concerning the evolution of fundamental structures including bilateralism which is now know to precede the Precambrian."