Definition of "hyperemia" [hyperemia]

• An increase in the quantity of blood flow to a body part; engorgement. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The first pronounced change occurring in an organ under inflammation is an increase in the rapidity with which the blood circulates through the vessels -- a so-called hyperemia -- which soon gives place to a diminution"
• "Congestion of the brain consists in an accumulation of blood in the vessels, also called hyperemia, or engorgement."
• "There have also been reports of conjunctival hyperemia, or redness in the eyes."