Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun Something, such as a nerve or drug, that causes vasoconstriction.
from The Century Dictionary.
- Serving to constrict vessels when stimulated, as certain nerves: opposed to vasodilator. Both are included under vasomotor.
- noun That which causes contraction of the blood-vessels: applied to nerves and to certain drugs.
from the GNU version of the Collaborative International Dictionary of English.
- adjective (Physiol.) Causing constriction of the blood vessels; These nerves are also called
vasohypertonic . - noun (Medicine, Physiology) A substance which causes constriction of the blood vessels. Such substances are used in medicine to raise abnormally low blood pressure.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun medicine Any substance that causes
vasoconstriction
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun any agent that causes a narrowing of an opening of a blood vessel: cold or stress or nicotine or epinephrine or norepinephrine or angiotensin or vasopressin or certain drugs; maintains or increases blood pressure
Etymologies
Sorry, no etymologies found.
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Examples
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Its all about caffeine being a vasoconstrictor and everything starting to open up when the caffeine gets low.
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Tobacco also acts as a vasoconstrictor, (constrictor of blood vessels), reducing blood flow to an area, and temporarily raising blood pressure.
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The ingredient in the drops, tetrahydrozaline hydrochloride, is a vasoconstrictor, so it might reduce skin redness too.
Simple Skin Beauty Ellen Marmur 2009
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The ingredient in the drops, tetrahydrozaline hydrochloride, is a vasoconstrictor, so it might reduce skin redness too.
Simple Skin Beauty Ellen Marmur 2009
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The ingredient in the drops, tetrahydrozaline hydrochloride, is a vasoconstrictor, so it might reduce skin redness too.
Simple Skin Beauty Ellen Marmur 2009
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Cigarettes are a vasoconstrictor, raise blood pressure and stress the adrenals whose job it is to regulate the blood pressure.
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The new ingredient is called Phenyleprine, which is a vasoconstrictor.
Sudafed PE: Pregnant Women Should Watch Out For Reformulated Medicines - The Consumerist 2007
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L-amphetamine has some pressor/sympathomimetic effects which pseudoephedrine/phenylephrine/ephedrine all have, this vasoconstrictor type effect is responsible for the relief of rhinitis but virtually no psychoactive effects; D-amphetamine has both in spades.
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If you read the link, you go on to discover that Ipomoea varieties contain a lot of ergotamine, which is a vasoconstrictor and uterine stimulator, and should be approached with caution.
L.S.D., R.I.P. 2006
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As the caffeine that the body is so used to wears out of the system, since caffeine is usually a vasoconstrictor -- it narrows the blood vessels -- without that, the blood vessels dilate and it causes a headache.
chained_bear commented on the word vasoconstrictor
"...I used this to lay a fine mist over the operating field and wash away the first welling of blood. Not too much; the vasoconstrictor I had given him was working, but the effect wouldn't last long."
—Diana Gabaldon, An Echo in the Bone (New York: Delacorte Press, 2009), 556
December 17, 2009