0 a very large amount of something, especially a larger amount than you need, want, or can deal with:
The plethora of regulations is both contradictory and confusing.
1 a very large amount of something, esp. a larger amount than you need, want, or can deal with:
This conflicting opinion, together with complex cultural and socioeconomic issues surrounding wetlands, has given rise to a plethora of views on how to develop wetlands.
Inevitably, health and safety legislation generates a plethora of acronyms, which are fortunately well covered by a 12-page appendix.
In the light of such developments a plethora of institutions both national and international have trumpeted the paramountcy of the fight against corruption.
He cites numerous examples and a plethora of statistical information to document the population changes ahead, as well as the reasons for falling fertility rates.
Indeed, preliminary inventories of the general linguistic characteristics of the dialects reveals a plethora of archaic features.
There is always ample factual information, which also neatly guides the reader through the plethora of government publications.
A heterogeneity of memories triggered by the same memory material, stirring up a plethora of emotional extensions of the work.
As revonsuo and other evolution-minded theorists suggest, humans, like other animals, should have evolved a plethora of special threat-detection devices.