bilateral

adj. having two sides; reciprocal

This article is about the political term; for the term as used in biology, see symmetry (biology). Bilateralism is a term referring to political and cultural relations between two states. Most international diplomacy is done bilaterally. Examples of this include treaties between two countries, exchanges of ambassadors, and state visits. The alternatives to bilateral relations are multilateral relations, which involve many states, and unilateralism, when one state acts on its own.There has long been a debate on the merits of bilateralism versus multilateralism. The first rejection of bilateralism came after the First World War when many politicians concluded that the complex pre-war system of bilateral treaties had made war inevitable. This led to the creation of the multilateral League of Nations.
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Adjective
1. having identical parts on each side of an axis
(synonym) isobilateral, bilaterally symmetrical, bilaterally symmetric
(similar) symmetrical, symmetric
2. having two sides or parts
(synonym) two-sided
(antonym) unilateral, one-sided
(similar) bipartite, two-party, two-way
3. affecting or undertaken by two parties; "a bilateral agreement between the United States and Japan"
(similar) reciprocal, mutual

adv. bilaterally, in bilateral way

adj. bilateral, having two sides; reciprocal

adj. two way, bilateral