#middle_class__bourgeoisie  the social class between the lower and upper classes
  supertype:  socio-economic_class__class__clas__socialclas  people having the same social or economic status; "the working class"; "an emerging professional class"
  subtype:  petite_bourgeoisie  lower middle class (shopkeepers and clerical staff etc.)
  member:  bourgeois__bourgeoi__burgher  a member of the middle class

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