volume


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.

* * *

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

* * *

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

Medical dictionary. 2011.

Synonyms:

Look at other dictionaries:

  • 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

  • Volume 1 (I¨s) — Iori (également le nom d un personnage du manga) est le nom du volume 1 du manga I¨s. Résumé Séto est amoureux en secret de Iori, qui est dans le même lycée que lui et qui fait du théâtre. Suite à une ancienne histoire d amour (où il avait révélé …   Wikipédia en Français

  • Volume 1 (i¨s) — Iori (également le nom d un personnage du manga) est le nom du volume 1 du manga I¨s. Résumé Séto est amoureux en secret de Iori, qui est dans le même lycée que lui et qui fait du théâtre. Suite à une ancienne histoire d amour (où il avait révélé …   Wikipédia en Français

  • 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


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.