From Longman Business DictionaryKondratiev cycleKon‧dra‧ti‧ev cy‧cle /kɒnˈdrætiev ˌsaɪkəlkɑːn-/ (also Kondratieff cycle also Kondratiev wave) noun [countable]ECONOMICS the idea that in a CAPITALIST economy, periods of fast growth are followed by periods of slower growth or no growth, and that this pattern is repeated every 50 to 60 yearsKondratieff waves of growth and decline