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Kondratieff wave

American  
[kuhn-drah-tee-ef, -tyuhf] / kənˈdrɑ tiˌɛf, -tyəf /

noun

Economics.
  1. a long business cycle of economic expansion and contraction, postulated to last about 60 years.


Etymology

Origin of Kondratieff wave

Named after Nikolaĭ Dmitrievich Kondratʾev (1892–1935?), Russian economist, who postulated it