<p><strong>Adjective:</strong></p><ul><li>Pertaining to, involving, or affecting two or both sides, factions, parties, or the like: a bilateral agreement; bilateral sponsorship.</li><li>Located on opposite sides of an axis; two-sided, especially when of equal size, value, etc.</li><li>Biology: pertaining to the right and left sides of a structure, plane, etc.</li><li>Chiefly Law: (of a contract) binding the parties to reciprocal obligations.</li><li>Through both parents equally: bilateral affiliation.</li></ul>