n. (Feud. Law) See Vavasor. [ 1913 Webster ]
a. (Physiol.) Causing constriction of the blood vessels;
n. (Medicine, Physiology) A substance which causes constriction of the blood vessels. Such substances are used in medicine to raise abnormally low blood pressure. [ PJC ]
n. [ L. vas a vessel + E. dentine. ] (Anat.) A modified form of dentine, which is permeated by blood capillaries; vascular dentine. [ 1913 Webster ]
a. [ L. vas a vessel + dilator. ] (Physiol.) Causing dilation or relaxation of the blood vessels;
n. [ L. vas a vessel + dilator. ] (Medicine & Physiology) A substance which causes dilation of blood vessels. [ PJC ]
a. [ L. vas a vessel + formative. ] (Physiol.) Concerned in the development and formation of blood vessels and blood corpuscles;
a. [ See Hyper-, and Tonic. ] See Vasoconstrictor. [ 1913 Webster ]
a. [ See Hypo-, and Tonic. ] See Vasodilator. [ 1913 Webster ]
a. (Physiol.) See Vasodilator. [ 1913 Webster ]
a. [ L. vas a vessel + motor that which moves fr. movere to move. ] (Physiol.) Causing movement in the walls of vessels;
Vasomotor center,
n. [ OE. vavasour, OF. vavassor, vavassour, F. vavasseur, LL. vavassor, probably contr. from vassus vassorum vassal of the vassals. See Vassal. ] (Feud. Law) The vassal or tenant of a baron; one who held under a baron, and who also had tenants under him; one in dignity next to a baron; a title of dignity next to a baron. Burrill. “A worthy vavasour.” Chaucer.
Vavasours subdivide again to vassals, exchanging land and cattle, human or otherwise, against fealty. Motley. [ 1913 Webster ]
n. [ F. vavassorie. ] (Feud. Law) The quality or tenure of the fee held by a vavasor; also, the lands held by a vavasor. [ 1913 Webster ]