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 [vas] (pl. va´sa) (L.)
vessel. adj., adj va´sal.
vas aber´rans
1. a blind tube sometimes connected with the epididymis; a vestigial mesonephric tube.
2. any anomalous or unusual vessel.
va´sa afferen´tia vessels that convey fluid to a structure or part.
va´sa bre´via short gastric arteries.
vas de´ferens ductus deferens.
va´sa efferen´tia vessels that convey fluid away from a structure or part.
va´sa lympha´tica lymphatic vessels.
va´sa prae´via the presentation, in front of the fetal head during labor, of the blood vessels of the umbilical cord where they enter the placenta.
va´sa rec´ta re´nis long U-shaped vessels arising from the efferent glomerular arterioles of juxtamedullary nephrons and supplying the renal medulla. Called also arteriolae rectae renis.
va´sa vaso´rum the small nutrient arteries and veins in the walls of the larger blood vessels.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.


, gen.


, pl.


, gen. and pl.


(vas, vā'sis, vā'să, vā-sō'rŭm), [TA]
A duct or canal conveying any liquid, such as blood, lymph, chyle, or semen.
See also: vessel.
[L. a vessel, dish]
Farlex Partner Medical Dictionary © Farlex 2012


n. pl. vasa (vā′zə) Anatomy
A vessel or duct.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.


Abbreviation for visual analogue scale.


, pl. vasa (vas, vā'să) [TA]
A duct or canal conveying any liquid, such as blood, lymph, chyle, or semen.
See also: vessel
[L. a vessel, dish]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012


(vas) (va'za) plural.vasa [L. vas, vessel]
A vessel or duct.

vas aberrans

1. A narrow tube varying in length from 112 to 14 in (3.8 to 35.6 cm), occasionally found connected with the lower part of the canal of the epididymis or with the commencement of the vas deferens.
2. A vestige of the bile ducts sometimes found in the liver.

vas afferens

An afferent vessel of a lymph node.

vas afferens glomeruli

The afferent arteriole that carries blood to the glomerulus of a renal corpuscle.

vas capillare

A capillary blood vessel.
Enlarge picture

vas deferens

The secretory duct of the testis, a continuation of the epididymis. This slim, muscular tube, approx. 18 in (45.7 cm) long, transports the sperm from each testis to the ejaculatory duct, which empties into the prostatic urethra.
Synonym: ductus deferens See: illustration; genitalia for illus.

vas lymphaticum

One of the vessels carrying the lymph.

vas prominens

Blood vessel on the cochlea's accessory spiral ligament.

vas spirale

A large blood vessel beneath the tunnel of Corti in the basilar membrane.
Medical Dictionary, © 2009 Farlex and Partners


A vessel or channel conveying fluid. See VAS DEFERENS.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005


, pl. vasa (vas, vā'să) [TA]
Duct or canal conveying any liquid (e.g., blood).
[L. a vessel, dish]
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
Vass. Vass is currently ranked in the top 1.5% of 280,065 economists who publish on the SSRN platform.
HEROIC: Wirral World War I hero Lt Capt William Albert Vass in uniform
Grayson missed the conversion but was on target after Vass' moment of individual brilliance produced their second try.
“My interest in accredited investor crowdfunding is primarily about how existing, small operational technology companies can obtain small amounts of capital to support company growth,” Vass explained.
It is this objective which the government has tried to achieve in its sustained discussions with varying shades of political opinion during the last few months," said Sajin Vass Gunewardane.
Hit for six: Chaminda Vass, Live International Cricket
Adrian Vass, an adviser for the Rural Development Service in the North East, said: "The inn is already a popular place for tourists wishing to use it as a base to explore this area that's steeped in history.
Ian Vass, still only 21, made sure that Northampton had no worries about the absence of England scrum-half Matt Dawson, who could be out for six weeks with knee trouble.
In the 23rd minute, scrum half Ian Vass scored a gem, to present Grayson with a simple conversion to make it 15-6.
He is replaced by Ian Vass for Saturday's Pool Six meet-ing with the Blue & Blacks at Franklin's Gardens.
Instead, Perth sheriff Lindsay Foulis placed 53-year-old Ian Vass on probation.
Also joining them will be John Clough, whose daughter Jane was stalked and murdered in Blackpool in 2010 by her ex Jonathan Vass.