WordWeb Online

1. Having identical parts on each side of an axis
   - isobilateral, bilaterally symmetrical, bilaterally symmetric
    
2. Affecting or undertaken by two parties
   "a bilateral agreement between the United States and Japan"
    
3. Having two sides or parts
   - two-sided

See also: bilaterality, bilaterally, many-sided, multilateral, mutual, reciprocal, symmetric, symmetrical

Encyclopedia: Bilateral