hy·​per·​emia ˌhī-pər-ˈē-mē-ə How to pronounce hyperemia (audio)
: excess of blood in a body part : congestion
hyperemic adjective

Examples of hyperemia in a Sentence

Recent Examples on the Web When the arm is submerged in a plexiglass water tank, more reactive hyperemia results in greater water displacement, meaning greater arm volume. Bryant Stamford, The Courier-Journal, 2 Mar. 2023 The scientific term for this is reactive hyperemia. Bryant Stamford, The Courier-Journal, 2 Mar. 2023 The noninvasive procedure, called reactive hyperemia peripheral arterial tonometry, measures blood flow to the fingers during blood pressure inflation and release. Mayo Clinic News Network, chicagotribune.com, 1 Nov. 2019

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'hyperemia.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


New Latin

First Known Use

circa 1839, in the meaning defined above

Time Traveler
The first known use of hyperemia was circa 1839

Dictionary Entries Near hyperemia

Cite this Entry

“Hyperemia.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hyperemia. Accessed 12 Jul. 2024.

Medical Definition


variants or chiefly British hyperaemia
: excess of blood in a body part (as from an increased flow of blood due to vasodilation) : congestion
hyperemic adjective
or chiefly British hyperaemic
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