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Vasoconstrictor
n.
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A substance which causes constriction of the blood vessels. Such substances are used in medicine to raise blood pressure.
Vasodentine
n.
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A modified form of dentine, which is permeated by blood capillaries; vascular dentine.
Vasodilator
a.
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Causing dilation or relaxation of the blood vessels; as, the vasodilator nerves, stimulation of which causes dilation of the blood vessels to which they go. These nerves are also called vaso-inhibitory, and vasohypotonic nerves, since their stimulation causes relaxation and rest.
Vasoformative
a.
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Concerned in the development and formation of blood vessels and blood corpuscles; as, the vasoformative cells.
Vaso-inhibitory
a.
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See Vasodilator.
Vasomotor
a.
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Causing movement in the walls of vessels; as, the vasomotor mechanisms; the vasomotor nerves, a system of nerves distributed over the muscular coats of the blood vessels.
Vassal
n.
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The grantee of a fief, feud, or fee; one who holds land of superior, and who vows fidelity and homage to him; a feudatory; a feudal tenant.
Vassal
n.
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A subject; a dependent; a servant; a slave.
Vassal
v. t.
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To treat as a vassal; to subject to control; to enslave.
Vassalage
n.
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The state of being a vassal, or feudatory.
Vassalage
n.
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Political servitude; dependence; subjection; slavery; as, the Greeks were held in vassalage by the Turks.
Vassalage
n.
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A territory held in vassalage.
Vassalage
n.
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Vassals, collectively; vassalry.
Vassalage
n.
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Valorous service, such as that performed by a vassal; valor; prowess; courage.
Vassaless
n.
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A female vassal.
Vassalry
n.
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The body of vassals.
Vast
superl.
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Waste; desert; desolate; lonely.
Vast
superl.
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Of great extent; very spacious or large; also, huge in bulk; immense; enormous; as, the vast ocean; vast mountains; the vast empire of Russia.
Vast
superl.
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Very great in numbers, quantity, or amount; as, a vast army; a vast sum of money.
Vast
superl.
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Very great in importance; as, a subject of vast concern.
Vast
n.
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A waste region; boundless space; immensity.
Vastation
n.
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A laying waste; waste; depopulation; devastation.
Vastel
n.
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See Wastel.
Vastidity
n.
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Vastness; immensity.
Vastitude
n.
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Vastness; immense extent.
Vastitude
n.
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Destruction; vastation.
Vastity
n.
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Vastness.
Vastly
adv.
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To a vast extent or degree; very greatly; immensely.
Vastness
n.
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The quality or state of being vast.
Vasty
a.
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Vast; immense.