Venous \Ven"ous\, a. [L. venosus, from vena a vein. See Vein.]
1. (Anat.) Of or pertaining to a vein or veins; as, the
venous circulation of the blood.
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2. Contained in the veins, or having the same qualities as if
contained in the veins, that is, having a dark bluish
color and containing an insufficient amount of oxygen so
as no longer to be fit for oxygenating the tissues; --
said of the blood, and opposed to arterial.
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3. Marked with veins; veined; as, a venous leaf.
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Venous leaf (Bot.), a leaf having vessels branching, or
variously divided, over its surface.
Venous hum (Med.), a humming sound, or bruit, heard during
auscultation of the veins of the neck in anaemia.
Venous pulse (Physiol.), the pulse, or rhythmic
contraction, sometimes seen in a vein, as in the neck,
when there is an obstruction to the passage of blood from
the auricles to the ventricles, or when there is an
abnormal rigidity in the walls of the greater vessels.
There is normally no pulse in a vein.
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