Simple Definition of plethora

from our Learner's Dictionary

plethora

noun

ˈplɛθərə How to pronounce plethora (audio)
formal : a very large amount or number : an amount that is much greater than what is necessary
A plethora of books have been written on the subject.
a plethora of information

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“Plethora.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/plethora. Accessed 13 Jun. 2026.

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