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Any vessel or canal in which blood circulates in an animal, as an artery or vein.

One of the radical zones of echinoderms, along which run the principal nerves, blood vessels, and water tubes. These zones usually bear rows of locomotive suckers or tentacles, which protrude from regular pores. In star fishes they occupy the grooves along the under side of the rays.

A prefix, or combining form, in numerous compounds, usually relating to seed or blood vessels, or to something contained in, or covered by, a vessel.

A description of blood vessels and lymphatics.

That part of anatomy which treats of blood vessels and lymphatics.

A tumor composed chiefly of dilated blood vessels.

Any disorder of the vasomotor system; neurosis of a blood vessel. --An`gi*o*neu*rot"ic (#), a.

Disease of the vessels, esp. the blood vessels.

Dissection of the blood vessels and lymphatics of the body. Dunglison.

or pressure, esp. from within; to force open suddenly; as, to burst a cannon; to burst a blood vessel; to burst open the doors. My breast I'll burst with straining of my courage. Shak.

A minute, thin-walled vessel; particularly one of the smallest blood vessels connecting arteries and veins, but used also for the smallest lymphatic and biliary vessels.

A capillary blood vessel. [Obs.] Sir T. Browne.

tecture. Chevron bones (Anat.), The V-shaped subvertebral arches which inclose the caudal blood vessels in some animals.

d plexus (Anat.), one of the delicate fringelike processes, consisting almost entirely of blood vessels, which project into the ventricles of the brain.

To cause an overfullness of the blood vessels (esp. the capillaries) of an organ or part.

Overfullness of the capillary and other blood vessels, etc., in any locality or organ (often producing other morbid symptoms); local hyperas, arterial congestion; venous congestion; congestion of the lungs.

The passage of the corpuscular elements of the blood from the blood vessels into the surrounding tissues, without rupture of the walls of the blood vessels.

rally superior, as of a creeping hepatic moss. Dorsal vessel (Zoöl.), a central pulsating blood vessel along the back of insects, acting as a heart.

Conveying outward, or discharging; -- applied to certain blood vessels, lymphatics, nerves, etc.

The occlusion of a blood vessel by an embolus. Embolism in the brain often produces sudden unconsciousness and paralysis.