American Heritage® Dictionary of the English Language, Fourth Edition
- n. Something, such as a nerve or drug, that causes vasoconstriction.
Century Dictionary and Cyclopedia
- Serving to constrict vessels when stimulated, as certain nerves: opposed to vasodilator. Both are included under vasomotor.
- n. That which causes contraction of the blood-vessels: applied to nerves and to certain drugs.
- n. medicine Any substance that causes vasoconstriction
GNU Webster's 1913
- adj. (Physiol.) Causing constriction of the blood vessels; These nerves are also called
- n. (Medicine, Physiology) A substance which causes constriction of the blood vessels. Such substances are used in medicine to raise abnormally low blood pressure.
- n. 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
“Its all about caffeine being a vasoconstrictor and everything starting to open up when the caffeine gets low.”
“Tobacco also acts as a vasoconstrictor, (constrictor of blood vessels), reducing blood flow to an area, and temporarily raising blood pressure.”
“The ingredient in the drops, tetrahydrozaline hydrochloride, is a vasoconstrictor, so it might reduce skin redness too.”
“Cigarettes are a vasoconstrictor, raise blood pressure and stress the adrenals whose job it is to regulate the blood pressure.”
“The new ingredient is called Phenyleprine, which is a vasoconstrictor.”
“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.”
“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.”
“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.”
“Using a microbot equipped with a hairline titanium needle containing a potent vasoconstrictor, Delta-Two had flown the device into the man's house through an open second-story window, found the man's bedroom, and then pricked him on the shoulder while he was sleeping.”
“The vasoconstrictor administered earlier did in fact seem to be working; the ooze of blood from the severed tissues was markedly less.”
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