The Collaborative International Dictionary
Vasomotor \Vas`o*mo"tor\, a. [L. vas a vessel + motor that which moves fr. movere to move.] (Physiol.) Causing movement in the walls of vessels; as, the vasomotor mechanisms; the vasomotor nerves, a system of nerves distributed over the muscular coats of the blood vessels.
Vasomotor center, 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.
Wiktionary
a. Of or pertaining to the regulation of the diameter of blood vessels.
WordNet
adj. relating to the nerves and muscles that cause the blood vessels to constrict or dilate
Wikipedia
Vasomotor refers to actions upon a blood vessel which alter its diameter. More specifically, it can refer to vasodilator action and vasoconstrictor action.
Currently, new research has been performed suggesting that vasomotor topographic patterns are not consistent with traditional vasomotor nerve topography charts.
Usage examples of "vasomotor".
In the disease, it seemed, the nerve fibers themselves in the small nerves broke down and the affection was motor, sensory, vasomotor, or endemic.
This paleness of the surface, however, is probably in large part, or exclusively, due to the vasomotor centre being affected in such a manner as to cause the contraction of the small arteries of the skin.
It begins with the deterioration of the efferent nerves and escalates to paralysis of the cardiac, vasomotor, and respiratory reflex centers in the brain.