1. 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; hyperaemia; opposed to anaemia.

2. State of being overfull; excess; superabundance. "He labors under a plethora of wit and imagination." (Jeffrey)

Origin: NL, fr. Gr, fr. To be or become full. Cf. Pleonasm.

(01 Mar 1998)