| 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) |
|---|---|
| extractor | One who, or that which, extracts; as: A device for withdrawing a cartridge or spent cartridge shell from the chamber of the barrel. Source: Websters Dictionary (01 Mar 1998) |
| pivot | 1. A fixed pin or short axis, on the end of which a wheel or other body turns. 2. The end of a shaft or arbor which rests and turns in a support; as, the pivot of an arbor in a watch. 3. Hence, figuratively: A turning point or condition; that on which important results depend; as, the pivot of an enterprise. 4. The officer or soldier who simply turns in his place whike the company or line moves around him in wheeling; called also pivot man. Pivot bridge, a form of drawbridge in which one span, called the pivot span, turns about a central vertical axis. Pivot gun, a gun mounted on a pivot or revolving carriage, so as to turn in any direction. <dentistry> Pivot tooth, an artificial crown attached to the root of a natural tooth by a pin or peg. Origin: F.; prob. Akin to It. Piva pipe, F. Pipe. See Pipe. Source: Websters Dictionary (01 Mar 1998) |
| pivot joint | A synovial joint in which a section of a cylinder of one bone fits into a corresponding cavity on the other, as in the proximal radioulnar joint. Synonym: articulatio trochoidea, helicoid ginglymus, lateral ginglymus, rotary joint, rotatory joint, trochoid articulation, trochoid joint. (05 Mar 2000) |
| pivot shift test | A manoeuvre to detect a deficiency of the anterior cruciate ligament of the knee; when the knee is extended, a sudden subluxation of the lateral tibial condyle upon the distal femur is positive. (05 Mar 2000) |
Á¦Ç°¸í |
ÆÇ¸Å»ç |
º¸ÇèÄÚµå | ¼ººÐ/ÇÔ·® | ±¸ºÐ/º¸Çè±Þ¿© |
|---|
Á¦Ç°¸í |
ÆÇ¸Å»ç |
º¸ÇèÄÚµå | ¼ººÐ/ÇÔ·® | ±¸ºÐ/º¸Çè±Þ¿© |
|---|