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1. a passenger or freight-carrying ship, boat, etc.
2. an aircraft, esp an airship
3. Anatomy a tubular structure that transports such body fluids as blood and lymph
4. Botany a tubular element of xylem tissue consisting of a row of cells in which the connecting cell walls have broken down
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



(also trachea), in plants, a conducting element of xylem that consists of a long hollow tube formed by a single row of cells (vessel members) perforated on their transverse walls. Vessels are characteristic of angiosperms (except for certain Polycarpicae [Trochodendron, drimys] and Liliaceae [lily of the valley, dracena, agave]); they also occur in some ferns (Pleridium), selaginella, Equisetum, and Gneticae (ephedra, Gnetum, Welwitschia).

Vessels may be annular, helical, scalariform, or pitted, depending on the structures of their lateral walls. In annular and helical vessels the secondary membrane resembles rings or twisted ribbons. The vessels arise in the early stages of the development of plant organs and are capable of extension. Scalariform and pitted vessels with larger deposits of secondary membrane and bordered pits in the walls are formed in organs that have finished growing lengthwise. After the lignification of the membranes, the cell protoplasts die and the cavity of the vessel fills with water.

Primitive vessels were characterized by great length (reaching 1.3 mm) and small diameter; the lateral walls were marked by scalariform porosity (tulip tree), and the angular cross section of vessel members had scalariform perforations on sloped transverse walls. Highly specialized vessels are composed of short vessel members that in cross section are rounded and have a wide opening (reaching 0.5 mm in diameter). The vessel members have simple perforations on the transverse walls and small alternate pits on the lateral walls (ash, oak).


The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

What does it mean when you dream about a vessel?

A vessel in a dream may be the container that holds the dreamer’s valuables. The size and the condition of the vessel—e.g., old and tarnished or new and shiny—may indicate if these are established ideals or things newly acquired. Vessels can also be containers of the self.

The Dream Encyclopedia, Second Edition © 2009 Visible Ink Press®. All rights reserved.


A water-conducting tube or duct in the xylem.
A container or structural envelope in which materials are processed, treated, or stored; for example, pressure vessels, reactor vessels, agitator vessels, and storage vessels (tanks).
(naval architecture)
Any craft that can carry people or cargo over the surface of the water.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Secondary trocars should always be placed under direct, visually controlled entry and, at least hypothetically, should never injure any great vessel. Nevertheless, secondary trocars do sometimes cause injury, most often as a result of extreme lateral entry near the inguinal ligament.
Tetrology of Fallot followed by transposition of the great vessels were the commonest cyan- otic congenital heart lesions in our study.
Other injuries necessitating emergency operation are lung parenchyma, intercostal vessels and internal mammary vessels and great vessels of the thorax.
Fractures of these ribs indicate significant energy transfer and may be associated with injuries to the great vessels, brachial plexus, lungs, head and neck.
CHD children with congenital rubella infection may have open arterial duct, transposition of great vessels, common arterial trunk, atresia or malformations of atrioventricular and semilunar valve, open atrioventricular canal, Fallot's tetralogy (5-10% of all CHD), IVSD (5%), stenosis of pulmonary artery (Babajanov et al., 1996; Belacon and Podzaicov, 1991; Popov, 2004; Ulitskiy and Chukhovina, 2001).
They are caudal regression syndrome (including defects of the sacrum and lumbar vertebrae, distal spinal cord disruption with neurologic impairment, and lack of growth in the caudal region); spina bifida, hydrocephalus, and other CNS defects such as anencephalus; cardiac anomalies (ventricular and atrial septal defects and transposition of great vessels); anal/rectal atresia; renal malformations (agenesis, cystic kidney, and ureter duplex); situs inversus (transposition of viscera); and femoral hypoplasia-unusual facies syndrome.
Analyzing mortality in patients of all ages showed a much greater drop in mortality due to tetralogy of Fallot (50%) and transposition of the great vessels (71%) than when the analysis included adults only, suggesting that most of the improvement in survival for people with these defects occurred among children, Dr.
We stayed in one of the 14 suites on the Chateau floor at the top of the building, named after the great vessels on the river.
He goes on to say that, in addition, CTA gives doctors simultaneous 3D images of the heart and its chambers and partial images of the lungs and great vessels so that alternative causes of chest pain such as aortic dissection or lung clots may also be detected.
"This is a once-in-a lifetime experience to board a vessel that has captured the imagination of millions on the silver screen." Cllr Warren Bradley, leader of Liverpool City Council, said: "Liverpool has welcomed many great vessels but few are as famous as one that has starred as both HMS Bounty and The Black Pearl.
City council leader Warren Bradley, said: "Liverpool has welcomed many great vessels, but few as famous as this one.
If a pregnant woman at more than 20 weeks' gestation requires an intervention that necessitates lying supine (e.g., for physical restraint or electroconvulsive therapy), wedge her hip to displace her uterus from the great vessels to allow for adequate placental perfusion.