from The American Heritage® Dictionary of the English Language, 5th Edition.

  • adjective Relating to, causing, or regulating constriction or dilation of blood vessels.

from The Century Dictionary.

  • Serving to regulate the tension of blood-vessels, as nerves; vasomotorial, whether vasoconstrictor or vasodilator. Compare inhibition.
  • Also vasculomotor

from the GNU version of the Collaborative International Dictionary of English.

  • adjective (Physiol.) Causing movement in the walls of vessels
  • adjective the chief dominating or general center which supplies all the unstriped muscles of the arterial system with motor nerves, situated in a part of the medulla oblongata; a center of reflex action by the working of which afferent impulses are changed into efferent, -- vasomotor impulses leading either to dilation or constriction of the blood vessels.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective Of or pertaining to the regulation of the diameter of blood vessels.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adjective relating to the nerves and muscles that cause the blood vessels to constrict or dilate


Sorry, no etymologies found.


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  • But when seasonal allergy symptoms crop up for the first time in adulthood, they are more likely due to an irritation of the nasal membranes known as vasomotor or nonallergic rhinitis than to an IgE response, experts say.

    Adult Mystery: Sudden 'Allergy'

  • It's a-- it's a period which can last for a few seconds to a few minutes of what's called vasomotor instability, where the -- there's a dilation of blood vessels in the skin that often causes flushing, a sensation of heat, sweating.

    CNN Transcript Jul 18, 2002

  • Hot flashes, which doctors call vasomotor symptoms, are a major issue in women's health because there are so few effective remedies to relieve them. - News

  • With such a long course of treatment, side effects of hormone therapy such as vasomotor symptoms - hot flashes and night sweats - can become a major cause of decreased quality of life, and even discontinuation of treatment.


  • Because the IgE reaction isn't involved in vasomotor rhinitis, antihistamines and other over-the-counter allergy medications aren't very effective, nor are allergy shots.

    Adult Mystery: Sudden 'Allergy'

  • A residual loose end stems from the fact that the average age of women at enrollment for all 3 trials was the mid-60s, whereas the majority of women who use hormone therapy for treatment of vasomotor symptoms are in their early 50s.

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  • Kaunitz began by explaining that when "vasomotor symptoms" such as hot flashes start interfering with a woman's daily activities -- often because they've caused sleep deprivation -- some kind of treatment is appropriate.

    Is that right? One A Day Menopause Formula

  • In the piece he describes his fascination with various online porn sites and writes off sex addiction as another invented disease like vasomotor rhinitis (a.k.a. runny nose) or obesity.

    Portrait of the Onanist as a Young Man

  • Also kidneys, lumbar nerves, adrenal glands, vasomotor and venous systems.

    Astrology for Enlightenment

  • For American women, vasomotor symptoms are common around menopause, but the experience isn't universal: fewer Japanese, Korean and Southeast Asian women report having hot flashes.

    Menopause: Anatomy of a Hot Flash


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