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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 It might be outdated or ideologically biased.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 ?
Also, when a large thymic tumor is associated with the invasion of great vessels, lymph node enlargement, phrenic nerve palsy, or extrathymic metastases on CT, thymic carcinoma rather than atypical thymoma should be considered, as in our case.
MONTREAL -- Laparoscopic injury of the great vessels, while rare, carries up to a 20% mortality rate and a high rate of malpractice, Dr.
(5) Echocardiography can have limitations such as poor windows due to obesity or scarring and lack of definition of thoracic great vessels. Although cardiac magnetic resonance imaging (MRI) improves upon these limitations, it may be contraindicated in patients with pacemakers or significant amounts of retained metal.
The anterior lumbar surgery has more risks in vascular injury, the close anatomy relation between great vessels and lumbar spine are the primary reason, which is not unexpected, as exposure of spinal levels superior to L5-S1 require greater mobilization of the iliac vessels as well as the aorta and vena cava.3 In addition, the retroperitoneal inflammatory processes resulted from pre-existing disc degeneration leading to adhesion between the vessels and the disc may aggravate the risks of vascular injury.6 Consequently, much attention should be paid in anterior lumbar spine exposure.
Phase contrast velocity encoded MRI allows one to obtain measures of blood velocity plotted over the cardiac cycle through the valves and the great vessels. (8) This affords quantitative measures of blood flow which can, for example, be used to estimate the ejected blood volume during systole, or capture flow profiles proximal and distal to a stenosis.
Ventricular sep- tal defect (29%) followed by patent ductus arteriosus (14.9%), atrial septal defect (10.5%) and pulmonary valve stenois (7.1%) were the most common acynotic congenital heart diseases, whereas Fallot's tetrology (12.3%) followed by transposition of great vessels (7%) were the commonest cyanotic congenital heart diseases.
The other injuries identified were lung parenchyma bleeding (12) intercostal vessels (10), great vessels of the chest (6), internal mammary vessel (2), and pericardial injury with no myocardial injury (2).
Then they survey their clinical applications in cardiovascular medicine, such as the PET assessment of myocardial perfusion, MR angiography of coronaries and great vessels, and cardiac CT and magnetic resonance to evaluate acute chest pain in the emergency department.
The empty slips which great vessels once slid down watched by cheering crowds of workers lie vacant.
of the blood lost and of the blood remaining in the great vessels, the conclusion that death occurred as a consequence of haemorrhage is unsafe."
"Absent a quantitative assessment of the blood lost and of the blood remaining in the great vessels, the conclusion that death occurred as a consequence of haemorrhage is unsafe."
Transposition of the great vessels involves having the aorta arising from the right ventricle and the pulmonary artery originating from the left ventricle.