volume

Space occupied by matter, expressed usually in cubic millimeters, cubic centimeters, liters, etc. See water. SEE ALSO: capacity. [L. volumen, something rolled up, scroll, fr. volvo, to roll]
- atomic v. the atomic weight of an element divided by its density in the solid state; the v. of the gram-atomic weight of a solid element.
- v. averaging in computed tomography or magnetic resonance imaging, the effect of expressing the average density of a voxel as a pixel in the image; the greater the slice thickness, the more averaging is necessary, with loss in density resolution.
- closing v. (CV) the lung v. at which the flow from the lower parts of the lungs becomes severely reduced or stops during expiration, presumably because of airway closure; measured by the sharp rise in expiratory concentration of a tracer gas that had been inspired at the beginning of a breath that started from residual v..
- distribution v. the v. throughout which an added tracer substance appears to have been evenly distributed, calculated by dividing the amount of tracer added by its concentration after equilibration.
- end- diastolic v. the capacity or the amount of blood in the ventricle immediately before a cardiac contraction begins; a measurement of cardiac filling between beats, related to diastolic function.
- end- systolic v. the capacity or the amount of blood in the ventricle at the end of the ventricular ejection period and immediately preceding the beginning of ventricular relaxation; a measurement of the adequacy of cardiac emptying, related to systolic function.
- expiratory reserve v. (ERV) the maximal v. of air (about 1000 mL) that can be expelled from the lungs after a normal expiration. SYN: reserve air, supplemental air.
- extracellular fluid v. (ECFV) the fraction of body water not in cells, about 25% of body weight : it consists of plasma water (4.5% of body weight), water between cells (interstitial water-lymph, 11.5% of body weight), water in dense bone and connective tissue (7.5% of body weight), and water secretions. See entries under entries under water.. SEE ALSO: intracellular fluid.
- forced expiratory v. (FEV) the maximal v. that can be expired in a specific time interval when starting from maximal inspiration. A subscript annotation normally indicates the number of seconds the patient has been expiring e.g., FEV30–60.
- inspiratory reserve v. (IRV) the maximal v. of air that can be inspired after a normal inspiration; the inspiratory capacity less the tidal v.. SYN: complemental air.
- mean corpuscular v. (MCV) the average v. of red cells, calculated from the hematocrit and the red cell count, in erythrocyte indices.
- minute v. the v. of any gas or fluid moved per minute; e.g., cardiac output or the respiratory minute v..
- packed cell v. the v. of the blood cells in a sample of blood after it has been centrifuged in the hematocrit; normally, it amounts to 45% of the blood sample.
- partial v. the actual v. occupied by one species of molecule or particle in a solution; the reciprocal of the density of the molecule.
- residual v. (RV) the v. of air remaining in the lungs after a maximal expiratory effort. SYN: residual air, residual capacity.
- respiratory minute v. (RMV) the minute v. of breathing; the product of tidal v. times the respiratory frequency. See pulmonary ventilation.
- resting tidal v. the tidal v. under normal conditions, i.e., in the absence of exercise or other conditions that stimulate breathing.
- standard v. the v. of an ideal gas at standard temperature and pressure, approximately 22.414 L.
- stroke v. the v. pumped out of one ventricle of the heart in a single beat. SYN: stroke output.
- tidal v. (VT) the v. of air that is inspired or expired in a single breath during regular breathing. SYN: tidal air.

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vol·ume 'väl-yəm, -(.)yüm n
1) the amount of space occupied by a three-dimensional figure as measured in cubic units (as inches, quarts, or centimeters): cubic capacity
2) the amount of a substance occupying a particular volume

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vol·ume (volґūm) the measure of the quantity or capacity of a substance. Symbol V or V.

Medical dictionary. 2011.

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  • volume — [ vɔlym ] n. m. • XIIIe; lat. volumen « feuilles manuscrites enroulées », rad. volvere « rouler » I ♦ 1 ♦ (1270) Réunion d un certain nombre de cahiers (notamment imprimés) brochés ou reliés ensemble. ⇒ 1. livre. La bibliothèque royale « s… …   Encyclopédie Universelle

  • Volume ! — Volume ! La revue des musiques populaires Ex Copyright Volume ! (2001 2008) Pays   …   Wikipédia en Français

  • Volume — Vol ume, n. [F., from L. volumen a roll of writing, a book, volume, from volvere, volutum, to roll. See {Voluble}.] 1. A roll; a scroll; a written document rolled up for keeping or for use, after the manner of the ancients. [Obs.] [1913 Webster]… …   The Collaborative International Dictionary of English

  • volume — VOLUME. s. m. Livre relié. Ce livre fera un juste volume. un beau volume. gros volume. grand volume. il y a vingt volumes sur cette tablette. On appelle, Livre en grand volume, Un livre in folio. Et on appelle, Livres en petit volume, Les livres… …   Dictionnaire de l'Académie française

  • Volume I — Studioalbum von Queensberry Veröffentlichung 2008 Label Starwatch Music Format …   Deutsch Wikipedia

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  • Volume 4 — mey refer to: *Black Sabbath Vol 4, Black Sabbath s fourth studio album from 1972 *Led Zeppelin IV (official name ), Led Zeppelin s fourth studio album (released November 8, 1971): sometime called Led Zeppelin Volume 4 *Volume 4 (Yu Gi Oh! Set),… …   Wikipedia

  • Volume I — (Fabrizio De André) Volume I Album par Fabrizio De André Sortie  1967 Enregistrement 18 juillet 1964 25 juillet 1964 Durée 30 min 29 sec …   Wikipédia en Français

  • Volume 1 — DVD de Mushroomhead Publicación 9 de agosto de 2005 Grabación 2001 2004 Género(s) Industrial Metal Duración …   Wikipedia Español

  • Volume 2 — DVD de Mushroomhead Publicación 28 de octubre de 2008 Grabación 2006 2007 Género(s) Industrial Metal Duración …   Wikipedia Español

  • volume — s. m. 1. Espaço ocupado por um corpo qualquer. 2. Extensão, grossura de um objeto. 3. Unidade material que reúne, sob uma mesma capa, um certo número de folhas formando um todo ou fazendo parte de um conjunto. (Pode ser constituído por um ou mais …   Dicionário da Língua Portuguesa

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