amalgamate
to mix or merge into one whole
Root
- amalgam: mixture, blended mass, or things combined into one
Amalgamate is merge with the edges softened: separate things become one mixture.
The two clubs amalgamated their funds and ran one larger tutoring program.
Amalgamate belongs with amalgam: a mixture made from separate materials. The useful image is not a neat stack of parts, but a blended mass where the old borders are hard to see.