va·​so·​con·​stric·​tion ˌvā-zō-kən-ˈstrik-shən How to pronounce vasoconstriction (audio)
: narrowing of the lumen of blood vessels

Examples of vasoconstriction in a Sentence

Recent Examples on the Web And this is nothing new: DNA from 4,000-year-old hair preserved in Greenland showed signs of vasoconstriction. Max G. Levy, WIRED, 6 Jan. 2024 The repeated and completely transient nature of our patient’s symptoms supports the fact that embolism was not involved, whereas the resolution of the symptoms after initiation of the treatment with the vasodilator enalapril supports vasoconstriction as the cause of transient blindness. Seriously Science, Discover Magazine, 2 May 2014 Plus, caffeine can help with vasoconstriction (the constriction of blood vessels) as well, notes Dr. Boakye — a.k.a. dark circles can appear reduced. Catharine Malzahn, Good Housekeeping, 29 June 2023 That’s because these eye drops contain an active ingredient called brimonidine, which causes vasoconstriction, or the constriction of superficial blood vessels in the skin, Camp said. Alyssa Hui, Health, 27 June 2023 The stonefish produces intense vasoconstriction. Manasee Wagh, Popular Mechanics, 19 Jan. 2023 Blood flow to extremities becomes limited during cold exposure via vasoconstriction, in order to keep the vital organs and brain warm. Douglas Main, Discover Magazine, 21 Oct. 2011 Hypothetical mechanisms of transient monocular visual loss in our patient include vasoconstriction or embolism in the arterial blood supply of the eye. Seriously Science, Discover Magazine, 2 May 2014 The muscular wall of blood vessels contracts in a process known as vasoconstriction. Dr. Michael Daignault, USA TODAY, 19 May 2022 See More

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

Word History


vaso- + constriction, after French vaso-constriction

First Known Use

1899, in the meaning defined above

Time Traveler
The first known use of vasoconstriction was in 1899

Dictionary Entries Near vasoconstriction

Cite this Entry

“Vasoconstriction.” Dictionary, Merriam-Webster, Accessed 26 Feb. 2024.

Medical Definition


va·​so·​con·​stric·​tion -kən-ˈstrik-shən How to pronounce vasoconstriction (audio)
: narrowing of the lumen of blood vessels especially as a result of vasomotor action

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