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or veni- or ven-
Vein: venipuncture.

[From Latin vēna.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.



1. one of the system of branching vessels or tubes conveying blood from various parts of the body to the heart.
2. (loosely) any blood vessel.
3. one of the riblike thickenings that form the framework of the wing of an insect.
4. one of the strands or bundles of vascular tissue forming the principal framework of a leaf.
a. a body or mass of mineral deposit, igneous rock, or the like occupying a crevice or fissure in rock; lode.
b. any body or stratum of ore, coal, etc., clearly separated or defined.
6. a streak or marking, as of a different color, running through marble, wood, etc.
7. a temporary attitude, mood, or temper: spoke in a serious vein.
8. a tendency, quality, or strain traceable in conduct, writing, etc.: a vein of pessimism.
9. to furnish with veins.
10. to mark with lines or streaks suggesting veins.
11. to extend over or through in the manner of veins.
[1250–1300; < Old French < Latin vēna vein of the body, channel, ore deposit]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
Changes of hemodynamic indexes of male pigs induced with acute respiratory distress syndrome that received continuous veno- venous hemofiltration therapy (experimental) or conventional supportive therapy (control).
Idiopathic pulmonary arterial hypertension (PAH) is included in Group 1 of PAH classification, while pulmonary veno- occlusive disease (PVOD), pulmonary capillary hemangiomatosis (PCH), portopulmonary hypertension (PoPH) and HIV-associated PAH constitute the subgroups of Group I PAH disorders.
Familial pulmonary veno- occlusive disease: a case report.