verb, -mat⋅ed, -mat⋅ing.| 1. | to mix or merge so as to make a combination; blend; unite; combine: to amalgamate two companies. |
| 2. | Metallurgy. to mix or alloy (a metal) with mercury. |
| 3. | to combine, unite, merge, or coalesce: The three schools decided to amalgamate. |
| 4. | to blend with another metal, as mercury. |