1. in a manner involving or affecting two faces or surfaces; with two distinct sides or aspects
Usage: technical or formal; commonly used in archaeology and anthropology when describing stone tools
2. in a way that relates to or involves both sides of a relationship, agreement, or interaction
Usage: formal

Examples

• The ancient hand axe was crafted bifacially, with sharp edges on both sides.
• Archaeologists examined the stone tool bifacially to understand the toolmaker's technique.
• The treaty was negotiated bifacially, with both nations contributing equally to the agreement.
• The artifact was worked bifacially, demonstrating sophisticated stone-working skills.
• The agreement was structured bifacially to ensure fairness to both parties.