braze

This term describes a specific industrial joining process that differs from welding in that the base metals are not melted. Instead, a filler rod with a lower melting point is liquefied to create a bond, resulting in a joint that is often cleaner and more precise than a weld but generally less strong than a fusion weld.

Usage is primarily restricted to technical, engineering, and plumbing contexts. It carries a connotation of specialized skill and precision, often associated with HVAC systems, jewelry making, or high-end automotive repair where heat control is critical to avoid damaging the parent material.