Hyperaemia \Hy`per*[ae]"mi*a\, n. [NL., fr. Gr. "ype`r over + a"i^ma blood.]

(Med.) A superabundance or congestion of blood in an organ or part of the body.

Active hyper[ae]mia, congestion due to increased flow of blood to a part.

Passive hyper[ae]mia, interchange due to obstruction in the return of blood from a part. -- Hy`per*[ae]"mic, a.

Source: Webster's Revised Unabridged Dictionary (1913)