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vegetal

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(vej′ĕt-ăl) [L. vegetalis, animating, able to grow] 1. Pert. to plants; vegetable. 2. Tropic or nutritional, esp. referring to that part of an ovumcontaining the yolk. SEE: vegetal pole.

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vegetarian

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(vej-ĕ-ter′ē-ăn) [From vegetable, coined in 1847 by the Vegetarian Society] A person who does not eat animal flesh or, in some instances, any animal by-products. Different approaches result in individual variation in whether fish, eggs, and/or dairy foods are accepted dietary components. Vegetarians must carefully plan their meals to ensure that they have an adequate diet. vegetarian, adj. vegetarianism (vej-ĕ-ter′ē-ă-nizm), n.

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vegetate

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(vej′ĕ-tāt″) [L. vegetare, to grow, quicken] 1. To grow luxuriantly with the production of fleshy or warty outgrowths such as a polyp. 2. To lead a passive existence mentally or physically, or both.

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vegetation

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(vej″ĕ-tā′shŏn) 1. An abnormal mass appearing on a body part, esp. wartlike projections made up of collections of fibrin in which are enmeshed white and red blood cells. These projections are sometimes seen on denuded areas of the endocardium covering the valves of the heart. 2. Plant life; flora. 3. A passive, unengaged life.

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vegetative

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(vej′ĕ-tāt″iv) 1. Having the power to grow, as plants or bacteria bacteria that are actively metabolizing, growing, or reproducing. 2. Of an organ or bodily process, functioning involuntarily. 3. Quiescent, passive, as in a stage of development.

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vegetative state

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Persistent vegetative state.

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VEGF

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vascular endothelial growth factor.

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vehicle

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(vē′ĭ-kĕl) [L. vehiculum, means of transport] 1. An inert agent that carries the active ingredient in a medicine, e.g., a syrup in liquid preparations. 2. Any object that carries another, e.g., a work surface may be a vehicle that transmits germs from one person to another; a patch applied to the skin may be a vehicle that permits drug delivery to the body.

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vehicular hyperthermia

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SEE: under hyperthermia.

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veil

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(vāl) [L. velum, a covering] 1. Any veil-like structure. 2. A piece of the amniotic sac occasionally covering the face of a newborn infant. SYN: caul. 3. Slight alteration in the voice in order to disguise it.

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Veillonella

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(vā″yŏ-nel′ă) A genus of gram-negative, anaerobic diplococci that inhabit the oral cavity and gastrointestinal tract. Although Veillonella species rarely cause human disease, occasional episodes of bone or blood-borne infection have been reported.

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vein

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(vān) [L. vena, vein] A vessel carrying blood toward the heart. Most veins originate in capillaries and drain into increasingly larger veins until their blood is delivered to the right atrium of the heart. Portal veins also originate in capillaries, but their branches ...

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