English dictionary of medical terms (92)

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No:1820 - vital capacity: the volume of gas that can be expelled from the lungs from a position of full inspiration, with no limit to the duration of expiration; it is equal to the inspiratory capacity plus the expiratory reserve volume.
No:1821 - vitreous: glasslike or hyaline; often used alone to designate the vitreous body of the eye (corpus vitreum (NA)).
No:1822 - voluntary: (L. voluntas will) accomplished in accordance with the will.
No:1823 - vomitus: 1. vomiting. 2. matter vomited.
No:1824 - vulval, vulvar: pertaining to the vulva.
No:1825 - vulvovaginitis: inflammation of the vulva and vagina, or of the vulvovaginal glands.
No:1826 - withdrawal: 1. a pathological retreat from interpersonal contact and social involvement, as may occur in schizophrenia, depression, or schizoid avoidant and schizotypal personality disorders. 2. (DSM III-R) a substance-specific organic brain syndrome that follows the cessation of use or reduction in intake of a psychoactive substance that had been regularly used to induce a state of intoxication.
No:1827 - xanthoma: (xanth- + -oma) a tumour composed of lipid-laden foam cells, which are histiocytes containing cytoplasmic lipid material. Called also xanthelasma.
No:1828 - xanthopsia: (xantho- + Gr. opsis vision + -ia) a form of chromatopsia in which objects looked at appear yellow.
No:1829 - xerophthalmia: (xero- + Gr. ophthalmos eye + -a) dryness of the conjunctiva and cornea due to vitamin A deficiency. The condition begins with night blindness and conjunctival xerosis and progresses to corneal xerosis, and, in the late stages, to keratomalacia.
No:1830 - xerostomia: (xero- + Gr. stoma mouth + -ia) dryness of the mouth from salivary gland dysfunction, as in Sjögren's syndrome.

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