IPA: /əˈmælɡəˌmeɪtə/
KK: /əˈmælɡəˌmeɪtər/
A person or thing that combines or unites different elements into a single entity.
The amalgamator skillfully combined various materials to create a new product.
Amalgamator is formed from "amalgama" (from Latin *amalgama*, meaning a mixture or blend) and "-ator" (meaning one who does or performs). The word refers to one who blends or mixes different elements together.
Think of someone who 'blends' ('amalgama') different things together — that's what an amalgamator does.