Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun An abundance or excess of something.
  • noun An excess of blood in the circulatory system or in one organ or area.

from The Century Dictionary.

  • noun In pathology, overfullness of blood; a redundant fullness of the blood-vessels.
  • noun Overfullness in any respect; superabundance.

from the GNU version of the Collaborative International Dictionary of English.

  • noun Overfullness; especially, excessive fullness of the blood vessels; repletion; that state of the blood vessels or of the system when the blood exceeds a healthy standard in quantity; hyperæmia; -- opposed to anæmia.
  • noun State of being overfull; excess; superabundance.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun An excessive amount or number; an abundance.
  • noun medicine, archaic An excess of red blood cells or bodily humours.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun extreme excess

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[Late Latin plēthōra, from Greek, from plēthein, to be full; see pelə- in Indo-European roots.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Late Latin plethora (earlier pletura), from Ancient Greek πληθώρη (plēthōrē, "fullness"), from πλήθω (plēthō, "I fill").

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