Amalgam

An alloy of mercury with another metal or metals; as, an amalgam of tin, bismuth, etc.

A mixture or compound of different things.

A native compound of mercury and silver.

To amalgamate.

an alloy of mercury with another metal (usually silver) used by dentists to fill cavities in teeth; except for iron and platinum all metals dissolve in mercury and chemists refer to the resulting mercury mixtures as amalgams