| WPk | Ward's pack; wet pack |
|---|---|
| VT | tetrazolium violet; total ventilation; vacuum tube; vacuum tuberculin; vasotonin; venous thrombosis;... |
| ART | absolute retention time; Accredited Record Technician; acoustic reflex test; algebraic reconstructio... |
| CT | calcitonin; calf testis; cardiac tamponade; cardiothoracic [ratio]; carotid tracing; carpal tunnel; ... |
| SPT | secretin-pancreazymin [test]; single patch technique; sleep period time; spectrin; station pull-thro... |
| MVA | Manual Vacuum Aspiration |
|---|---|
| V.A.C. | Vacuum Assisted Closure |
| V.E. | vacuum extraction |
| ART | Algebraic Reconstruction Technique |
| CHART | Craig Handicap Assessment and Reporting Technique |
| blister pack | A package consisting of a clear plastic overlay affixed to a cardboard backing for protecting and displaying a product. (18 Nov 1997) |
|---|---|
| pack | 1. A bundle made up and prepared to be carried; especially, a bundle to be carried on the back; a load for an animal; a bale, as of goods. 2. [Cf. Peck] A number or quantity equal to the contents of a pack; hence, a multitude; a burden. "A pack of sorrows." "A pack of blessings." "In England, by a pack of meal is meant 280 lbs.; of wool, 240 lbs." 3. A number or quantity of connected or similar things; as: A full set of playing cards; also, the assortment used in a particular game; as, a euchre pack. A number of hounds or dogs, hunting or kept together. A number of persons associated or leagued in a bad design or practice; a gang; as, a pack of thieves or knaves. A shook of cask staves. A bundle of sheet-iron plates for rolling simultaneously. 4. A large area of floating pieces of ice driven together more or less closely. 5. An envelope, or wrapping, of sheets used in hydropathic practice, called dry pack, wet pack, cold pack, etc, according to the method of treatment. 6. [Prob. The same word; but cf. AS. Pcan to deceive] A loose, lewd, or worthless person. See Baggage. Pack animal, an animal, as a horse, mule, etc, employed in carrying packs. Pack cloth, a coarse cloth, often duck, used in covering packs or bales. Pack horse. See Pack animal (above). Pack ice. See def. 4, above. Pack moth, a troop of pack animals. Origin: Akin to D. Pak, G. Pack, Dan. Pakke, Sw. Packa, Icel. Pakki, Gael. & Ir. Pac, Arm. Pak. Cf. Packet. 1. To make a pack of; to arrange closely and securely in a pack; hence, to place and arrange compactly as in a pack; to press into close order or narrow compass; as to pack goods in a box; to pack fish. "Strange materials packed up with wonderful art." (Addison) "Where . . . The bones Of all my buried ancestors are packed." (Shak) 2. To fill in the manner of a pack, that is, compactly and securely, as for transportation; hence, to fill closely or to repletion; to stow away within; to cause to be full; to crowd into; as, to pack a trunk; the play, or the audience, packs the theater. 3. To sort and arrange (the cards) in a pack so as to secure the game unfairly. "And mighty dukes pack cards for half a crown." (Pope) 4. Hence: To bring together or make up unfairly and fraudulently, in order to secure a certain result; as, to pack a jury or a causes. "The expected council was dwindling into . . . A packed assembly of Italian bishops." (Atterbury) 5. To contrive unfairly or fraudulently; to plot. " He lost life . . . Upon a nice point subtilely devised and packed by his enemies." (Fuller) 6. To load with a pack; hence, to load; to encumber; as, to pack a horse. "Our thighs packed with wax, our mouths with honey." (Shack) 7. To cause to go; to send away with baggage or belongings; especially, to send away peremptorily or suddenly; sometimes with off; as, to pack a boy off to school. "He . . . Must not die" "Till George be packed with post horse up to heaven." (Shak) 8. To transport in a pack, or in the manner of a pack (i. E, on the backs of men or beasts). 9. To envelop in a wet or dry sheet, within numerous coverings. See Pack. 10. <mechanics> To render impervious, as by filling or surrounding with suitable material, or to fit or adjust so as to move without giving passage to air, water, or steam; as, to pack a joint; to pack the piston of a steam engine. Origin: Akin to D. Pakken, G. Packen, Dan. Pakke, Sw. Packa, Icel. Pakka. See Pack. Source: Websters Dictionary (01 Mar 1998) |
| cold pack | A pack of cloth or other material soaked in cold water or encasing ice. (05 Mar 2000) |
| wet pack | The usual form of pack using hot or cold moisture. (05 Mar 2000) |
| hot pack | A pack of cloth or other material soaked in hot water, or producing moist heat by another means. (05 Mar 2000) |
| dry pack | A pack enveloping one in dry, warmed blankets in order to induce profuse perspiration. (05 Mar 2000) |
| ice pack | A cold local application to limit or reduce swelling in recently traumatised tissues; usually in the form of a water-impervious container for ice. Improvised means for containing ice (plastic bags, towels, etc.) are often employed, as are chemical sacks that when struck allow the commingling of chemicals that react endothermically. (05 Mar 2000) |
| vacuum | Origin: L, fr. Vacuus empty. See Vacuous. 1. <physics> A space entirely devoid of matter (called also, by way of distinction, absolute vacuum); hence, in a more general sense, a space, as the interior of a closed vessel, which has been exhausted to a high or the highest degree by an air pump or other artificial means; as, water boils at a reduced temperature in a vacuum. 2. The condition of rarefaction, or reduction of pressure below that of the atmosphere, in a vessel, as the condenser of a steam engine, which is nearly exhausted of air or steam, etc.; as, a vacuum of 26 inches of mercury, or 13 pounds per square inch. Vacuum brake, a kind of continuous brake operated by exhausting the air from some appliance under each car, and so causing the pressure of the atmosphere to apply the brakes. <medicine> Vacuum pan, a glass tube provided with platinum electrodes and exhausted, for the passage of the electrical discharge; a Geissler tube. Vacuum valve, a safety valve opening inward to admit air to a vessel in which the pressure is less than that of the atmosphere, in order to prevent collapse. Torricellian vacuum. See Torricellian. Source: Websters Dictionary (01 Mar 1998) |
| vacuum casting | The casting of a metal in the presence of a vacuum. (05 Mar 2000) |
| vacuum curettage | Aspiration of the contents of the uterus with a vacuum curette. (12 Dec 1998) |
| vacuum desiccator | A desiccator that can be evacuated. (05 Mar 2000) |
| vacuum disk phenomenon | The appearance of a radiolucent stripe in an intervertebral disk, a manifestation of disk degeneration; a misnomer since there is gas present. (05 Mar 2000) |
| vacuum extraction, obstetrical | Removal of the foetus from the uterus or vagina at or near the end of pregnancy with a metal traction cup that is attached to the foetus' head. Negative pressure is applied and traction is made on a chain passed through the suction tube. (12 Dec 1998) |
| vacuum extractor | Device for producing traction upon the head of a foetus by means of a soft cup held by a vacuum. (05 Mar 2000) |
| vacuum flask | <apparatus> A glass vessel, often silvered, with two walls, the space between which is evacuated; used for maintaining materials at constant temperature or, more usually, at low temperature. Synonym: vacuum flask. (05 Mar 2000) |
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