amalgam
1. [ noun ] (chemistry,dentistry,metallurgy) 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
Synonyms: dental_amalgam
Related terms: alloy
2. [ noun ] a combination or blend of diverse things
Examples:

"his theory is an amalgam of earlier ideas"

Related terms: combination mix
Similar spelling:   amalgamate
  amylase