plethora

Concise Oxford English Dictionary © 2008 Oxford University Press:
plethora /ˈplɛθ(ə)rə/

▶noun

• 1 (a plethora of) an excess of.

• 2 Medicine an excess of a bodily fluid, particularly blood.

– derivatives
plethoric /ˈplɛθ(ə)rɪk, plɪˈθɒrɪk/ adjective (archaic or Medicine).

– origin C16: via late L. from Gk plēthōrē, from plēthein ‘be full’.