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• n  (biology) a taxonomic class below a phylum and above a class

• There is, to be sure, a so-called superclass of high-living yuppies, as young urban professional Baby Boomers were dubbed by Syndicated Columnist Bob Greene in early 1983.
• The revenues from new trade policies and foreign investment are flowing to an all too visible superclass of the very rich.
• Superclass: The Global Power Elite and the World They Are Making By David Rothkopf Farrar, Straus Giroux; 376 pages.