Skip to Main Content

volume controller

Buret (2).

volume depletion

Loss of body fluids, e.g., by bleeding, sweating, urinating, or vomiting. Excessive loss of body fluids without replenishment results in dehydration, hypotension, and kidney failure.

volume expander

Any solution used as an intravenous infusion to increase blood pressure by treating relative or absolute dehydration. Such expanders include isotonic or balanced solutions, solutions containing crystalloids (such as lactated Ringer solution), dextrans, and blood components.

volume overload

SEE: under overload.

volume percent

ABBR: vol%. The number of cubic centimeters (milliliters) of a substance (usually oxygen or carbon dioxide) contained in 100 mL of another substance, e.g., blood.

volume rendering

The imaging of the surface elements, internal geometry, and components of a three-dimensional structure.


(văl-yū′mē-tÄĕr) [volume + -meter] A device that measures the space occupied by a body part.


(vŏl″ū-mĕt′rĭk) [L. volumen, a volume, + Gr. metron, measure] Pert. to measurement of volume.

volumetric analysis

Quantitative analysis performed by the measurement of the volume of solutions or liquids.


(vol′ŭn-ter″ē) [L. voluntarius, willing, voluntary, fr. voluntas, will] Pert. to or under control of the will. voluntarily (vol″ŭn-ter′ĭ-lē), adj.

voluntary health agency

Any nonprofit, nongovernmental agency, governed by lay or professional people and organized on a national, state, or local level, whose primary purpose is health related. This term applies to agencies supported mainly by voluntary public contributions. These agencies are usually engaged in programs of service, education, and research related to a particular disability or group of diseases and disabilities; for example, the American Heart Association, American Cancer Society, National Lung Institute, and their state and local affiliates. The term can also be applied to such agencies as nonprofit hospitals, visiting nurse associations, and other local service organizations that have both lay and professional governing boards and are supported by both voluntary contributions and charges and fees for service provided.

voluntary propulsion of eyeball

The ability to voluntarily make the globe of the eye to protrude by as much as 10 mm (0.4 in). This is not harmful to the eye or visual acuity.

voluntary termination of pregnancy

Elective abortion.


(vol″ŭn-tēr′) [Fr. voluntaire, fr. L. voluntarius, willing, voluntary] 1. One who works without pay on behalf of a cause or an institution. 2. One who freely participates in a research study, without expectation of ...

Pop-up div Successfully Displayed

This div only appears when the trigger link is hovered over. Otherwise it is hidden from view.