percolator |
A funnel-shaped vessel used for the process of percolation in pharmacy. (05 Mar 2000) |
|---|---|
Percoll |
Trademark for colloidal silica coated with polyvinylpyrrolidone that is used for density gradients. Inert and will form a good gradient rapidly when centrifuged. Useful for the separation of cells, viruses and suB-cellular organelles. (18 Nov 1997) |
percomorph oil |
A liver oil from fish of the order Percomorphi, with a standardised amount of vitamins A and D. (05 Mar 2000) |
percomorphi |
<zoology> A division of fishes including the perches and related kinds. Origin: NL, fr. L. Perca perch + Gr. Form. Source: Websters Dictionary (01 Mar 1998) |
percuss |
<medicine> To strike or tap in an examination by percussion. See Percussion. Source: Websters Dictionary (01 Mar 1998) |
percussion |
1. The act of percussing, or striking one body against another; forcible collision, especially. Such as gives a sound or report. 2. Hence: The effect of violent collision; vibratory shock; impression of sound on the ear. "The thunderlike percussion of thy sounds." (Shak) 3. <medicine> The act of tapping or striking the surface of the body in order to learn the condition of the parts beneath by the sound emitted or the sensation imparted to the fingers. Percussion is said to be immediate if the blow is directly upon the body; if some interventing substance, as a pleximeter, is, used, it is called mediate. Center of percussion. See Center. Percussion bullet, a bullet containing a substance which is exploded by percussion; an explosive bullet. Percussion cap, a small copper cap or cup, containing fulminating powder, and used with a percussion lock to explode gunpowder. Percussion fuze. See Fuze. Percussion lock, the lock of a gun that is fired by percussion upon fulminating powder. Percussion match, a match which ignites by percussion. Percussion powder, powder so composed as to ignite by slight percussion; fulminating powder. Percussion sieve, Percussion table, a machine for sorting ores by agitation in running water. Origin: L. Percussio: cf. F. Percussion. See Percuss. Source: Websters Dictionary (01 Mar 1998) |
percussion sound |
Any sound elicited on percussing over one of the cavities of the body. (05 Mar 2000) |
percussion wave |
The main positive wave of an arterial pulse tracing. (05 Mar 2000) |
percussor |
A small hammer, usually with soft rubber head, used to tap the part directly, or with a plessimeter, in percussion of the chest or other part. Synonym: percussor, plexor. Origin: G. Plesso, to strike (05 Mar 2000) |
percutaneous |
<technique> Performed through the skin, as injection of radiopacque material in radiological examination or the removal of tissue for biopsy accomplished by a needle. Origin: L. Cutis = skin (18 Nov 1997) |
percutaneous absorption |
The absorption of drugs, allergens, and other substances through unbroken skin. Synonym: cutaneous absorption. (05 Mar 2000) |
percutaneous cholangiography |
Radiography of the biliary system after introduction of contrast medium by introducing a needle through the skin inferior to the right costal margin, and inserting it into the substance of the liver or into the gallbladder. (05 Mar 2000) |
percutaneous nephrostomy |
Drainage of the collecting system through a catheter inserted through the skin of the flank under fluoroscopic control, usually using the Seldinger technique. (05 Mar 2000) |
percutaneous stimulation |
Electrical stimulation of the peripheral nerves or spinal cord by the application of electrodes to the skin. (05 Mar 2000) |
percutaneous transhepatic cholangiography |
Contrast radiographic examination of biliary system performed by injection through a percutaneously placed needle inserted into an intrahepatic bile duct. (05 Mar 2000) |