bilateral

adj

1. Having two sides.

   “General Wego W.K. Chiang, secretary general of the National Security Council, said that the visit of El Salvador Vice President Merino to Taipei on behalf of President Alfredo Cristiani was in response to an invitation of the ROC [Republic of China] Government which hopes to further strengthen bilateral relations between the two countries.”

2. Involving both sides equally.
3. Binding on both of the two parties involved.
4. Having bilateral symmetry.
5. Involving descent or ascent regardless of sex and side of the family (bilateral linearity).

noun

1. A meeting between two people or groups.