supersession
1. [ noun ] act of replacing one person or thing by another especially one held to be superior
Synonyms: supersedure
Related terms: replacement supplant
Similar spelling:   subversion
  suppression
  superstition
  supersede
  superstring
  supersedure
  superscription
  supersonic
  supergrass
  superclass
  supersensitive
  suppressive
  superscript
  superscribe
  supersensitized
  supersensitised