- of, relating to, or of the nature of a vein.
- having, characterized by, or composed of veins.
- pertaining to the blood in the pulmonary artery, right side of the heart, and most veins, that has become deoxygenated and charged with carbon dioxide during its passage through the body and that in humans is normally dark red.
Origin of venous
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for venous
I had triple the normal rate of venous thromboembolism—a blood clot forming disorder—and an elevated risk for male breast cancer.
Venous thromboembolism—a condition that leads to blood clots—can be prevented fairly easily.
Now, the venous system routing blood around the scarred parts of my liver is more complex, more liable to rupture.I Need Steve Jobs' Liver
June 25, 2009
The substance of the liver was tender, and full of bile and venous blood.Cases of Organic Diseases of the Heart
John Collins Warren
Experimentally the eyeball can be made to burst by tying all the venous outlets from it.Glaucoma
Then we see wisdom just as much in the venous system, as in the arterial.Philosophy of Osteopathy
Andrew T. Still
If made thick, how does it get from the windpipes into the venous artery?
The liver and the lungs, therefore, are the great purifiers of the venous blood.The Reason Why
- physiol of or relating to the blood circulating in the veins
- of or relating to the veins
C17: see venose
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for venous
1620s, from Latin venosus "full of veins," from vena (see vein).
Online Etymology Dictionary, © 2010 Douglas Harper
- Of, relating to, or contained in the veins.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- Any of the blood vessels that carry blood toward the heart from the body's cells, tissues, and organs. Veins are thin-walled and contain valves that prevent the backflow of blood. All veins except the pulmonary vein carry blood with low levels of oxygen.
- One of the narrow, usually branching tubes or supporting parts forming the framework of an insect's wing or a leaf. Veins in insect wings carry hemolymph and contain a nerve. Veins in leaves contain vascular tissue, with the xylem usually occurring on the upper side of the vein (bringing in water and nutrients) and the phloem on the lower side (carrying away food). See more at leaf venation.
- A long, narrow deposit of mineral or rock that fills the void formed by a fracture or fault in another rock. The mineralogy of the host rock surrounding the vein is often altered where it is in contact with the vein because of chemical reactions between the two rock types.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.