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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



(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).


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.


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.
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.
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.
Histologic sections of great vessels from all birds (study and control birds) were reviewed and then submitted for immunohistochemical staining for the presence of C psittaci antigen.
Incomplete or partial situs inversus is invariably associated with cardiac abnormalities like septal defects, pulmonary arterial stenosis, tetralogy of Fallot, transposition of great vessels, and alimentary tract problems like atresia and stenosis of duodenum (4).
Contrast-enhanced MRI angiography (CE-MRA) can be performed to give an indication of the morphology of the great vessels.
Background: Congenital heart disease is a defect in the structure of heart and great vessels present at birth.
TRANSPOSITION of the great vessels means the aorta and the pulmonary arteries, which carry blood away from the heart, are switched.
Since the discovery of X-rays by Rontgen in 1895, the turf war between clinicians and radiologists regarding their ownership has always been fiercest around the imaging of the heart and great vessels.
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.