1. large or excessive amount or number: a very large amount of something or number of things, especially an excessive amount
(
formal
)
a plethora of new scholarly articles on the subject
2. excess of blood: an excess of blood in a part of the body, especially in the facial veins, causing a ruddy complexion
[Mid-16th century. Via late Latin< Greek plēthorē< plēthein "be full"]
