| packaging | <molecular biology, virology> Of a virus, the process by which the genetic material is encapsulated by the coat proteins. (18 Nov 1997) |
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| packed cell volume | <haematology> Measurement of the proportion of the blood occupied by the red blood cells. Normal values are 40-54% in males, 35-47% in females. (13 Nov 1997) |
| packed human blood cells | Whole blood from which plasma has been removed; may be prepared any time during the dating period of the whole blood from which it is derived, but not later than six days after the blood has been drawn if separation of plasma and cell's is achieved by centrifugation. (05 Mar 2000) |
| packed red blood cell | <haematology> Red blood cells collected from one individual that are packed into a small volume for transfusion into a patient. (16 Dec 1997) |
| packer | 1. An instrument for tamponing. Synonym: plugger. (05 Mar 2000) |
| packfong | <chemistry> A Chinese alloy of nickel, zinc, and copper, resembling German silver. Origin: Chin. Peh tung. Source: Websters Dictionary (01 Mar 1998) |
| packing | 1. Filling a natural cavity, a wound, or a mold with some material. 2. The material so used. 3. The application of a pack. (05 Mar 2000) |
| packing process | The method of placing denture base material in a flask for processing. (05 Mar 2000) |
| packwax | <anatomy> Same as Paxwax. Source: Websters Dictionary (01 Mar 1998) |
| paclitaxel | <drug> This alkaloid is an extract from the Pacific yew, Taxus brevifolia. It inhibits microtubule disassembly and is used as a chemotherapy agent to treat bladder, oesophageal and lung cancers and is being investigated as a treatment for leukaemia and lymphoma. (09 Oct 1997) |
| pacos | 1. <zoology> Same as Alpaca. 2. [Peruv. Paco, pacu, red, reddish, reddish ore containing silver; perh. A different word. <chemical> An earthy-looking ore, consisting of brown oxide of iron with minute particles of native silver. Origin: Sp. Paco, fr. Peruv. Paco. Cf. Alpaca. Source: Websters Dictionary (01 Mar 1998) |
| PACS | Acronym for picture archive and communication system, a computer network for digitised radiologic images and reports. (05 Mar 2000) |
| pactamycin | <drug> Antibiotic that inhibits translation by blocking the binding of initiator tRNA to the initiator complex. (18 Nov 1997) |
| pacu | <zoology> A South American freah-water fish (Myleies pacu), of the family Characinidae. It is highly esteemed as food. Source: Websters Dictionary (01 Mar 1998) |
| pad | 1. A soft, or small, cushion; a mass of anything soft; stuffing. 2. A kind of cushion for writing upon, or for blotting; especially, one formed of many flat sheets of writing paper, or layers of blotting paper; a block of paper. 3. A cushion used as a saddle without a tree or frame. 4. A stuffed guard or protection; especially, one worn on the legs of horses to prevent bruising. 5. <zoology> A cushionlike thickening of the skin one the under side of the toes of animals. 6. A floating leaf of a water lily or similar plant. 7. <medicine> A soft bag or cushion to relieve pressure, support a part, etc. 8. A piece of timber fixed on a beam to fit the curve of the deck. 9. A measure for fish; as, sixty mackerel go to a pad; a basket of soles. Pad cloth, a saddlecloth; a housing. Pad saddle. See def. 3, above. Pad tree, a piece of wood or metal which gives rigidity and shape to a harness pad. Origin: Perh. Akin to pod. Source: Websters Dictionary (01 Mar 1998) |