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English definition of “plethora”

plethora

noun [S]     /ˈpleθ.ər.ə/ US  /-ɚ.ə/ formal
C2 a very large amount of something, especially a larger amount than you need, want, or can deal with: There's a plethora of books about the royal family. The plethora of regulations is both contradictory and confusing.Too much and unnecessaryMasses and large amounts of things
(Definition of plethora noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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