amalgamate

Concise Oxford English Dictionary © 2008 Oxford University Press:
amalgamate /əˈmalgəmeɪt/

▶verb

• 1 combine or unite to form one organization or structure.

• 2 Chemistry alloy (a metal) with mercury.

– derivatives
amalgamation noun.

– origin C17: from med. L. amalgamat-, amalgamare ‘form into a soft mass’, from amalgama (see amalgam).