vas-, vaso-, vasi- +

1. A vessel, as of glass, porcelain, earthenware, or metal; usually higher than it is wide, used chiefly to hold cut flowers or for decoration.
2. A vessel adapted for various domestic purposes, and anciently for sacrificial used; especially, as a vessel of antique or elegant pattern used for ornament; as, a porcelain vase; a gold vase; a Grecian vase.
3. In botany, the calyx (sepals or ring of leaves of one flower collectively) of a plant.
4. From Latin vas "container, vessel."

1. To perform a vasectomy on a man.
2. To remove the vas deferens: "Many men choose to be vasectomized as a form of safe birth control."

1. Excision of the vas deferens, or of a portion of it: performed to effect sterility in men.
2. A surgical sterilisation procedure performed in males where a segment of the vas deferens (excretory duct of the testis that conveys sperm) is removed.
3. The surgical removal of the ductus (vas) deferens, or of a portion of it; done to induce infertility or in association with a prostatectomy.

The process in which blood vessels are produced or formed.

Bearing a vessel or vas.

1. Having the form of a duct or tube.
2. Shaped like a vas or tubular structure.
3. Having the appearance of a vessel.
4. Having the shape of a vase.

The process by which a structure assumes the appearance of a vessel or duct.

1. An infective process of the vas deferens usually spreading from adjacent organs and caused by a variety of infective agents.

The vas deferens is the tube connecting the testes with the urethra. It is a coiled duct that conveys sperm from the epididymis to the ejaculatory duct and the urethra.

2. Inflammation of the ductus deferens (secretory duct of the testicle, running from the epididymis, of which it is the continuation, to the prostatic urethra where it terminates as the ejaculatory duct).

A beading and nodularity of the vas deferens just above the epididymis, probably a result of a previously unrecognized vasitis of unknown origin.

A narrowing of the lumen of the blood vessels.

A loss of tone in blood vessels with consequent hypotension.

1. Tending to lower vascular tone (normal degree of vigor and tension).
2. An agent that lowers vascular tone and blood pressure.

1. Dilation of a blood vessel which may be caused by the action of a nerve or drug.
2. Widening of the blood vessels; especially, the arteries, leading to increased blood flow or reduced blood pressure.

An agent; such as, a parasympathetic nerve fiber or a drug that induces, causes, or initiates vasodilation.

The radiographic visualization of blood vessels following the introduction of contrast material; used as a diagnostic aid in such conditions as stroke syndrome and myocardial infarction (an area of tissue that undergoes necrosis as a result of obstruction of local blood supply; dead tissue).