| totally intrathoracic stomach | <radiology> Defect in the central tendon of the diaphragm in combination with a slight volvulus in the transverse axis of the stomach behind the heart, findings: cardia may be intrathoracic (usually) or subdiaphragmatic, greater curvature may be on right or left side see: hiatal hernia (12 Dec 1998) |
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| sterile | 1. Producing little or no crop; barren; unfruitful; unproductive; not fertile; as, sterile land; a sterile desert; a sterile year. 2. <biology> Incapable of reproduction; unfitted for reproduction of offspring; not able to germinate or bear fruit; unfruitful; as, a sterile flower, which bears only stamens. Free from reproductive spores or germs; as, a sterile fluid. 3. Barren of ideas; destitute of sentiment; as, a sterile production or author. Origin: F. Sterile, L. Sterilis, akin to Gr. Stereos stiff, solid, stei^ros barren, stei^ra a cow that has not calved, Goth. Stairo, fem, barren. See Stare to gaze. Source: Websters Dictionary (01 Mar 1998) |
| sterile abscess | An abscess whose contents are not caused by pyogenic bacteria. (05 Mar 2000) |
| sterile cyst | A hydatid cyst without brood capsules or viable scoleces. (05 Mar 2000) |
| sterile insect technique | A technique used to control or eradicate insect pests or vectors, utilizing induction by irradiation of dominant lethality in the chromosomes of the released insects. (05 Mar 2000) |
| Buck's extension | Apparatus for applying longitudinal skin traction on the leg through contact between the skin and adhesive tape; friction between the tape and skin permits application of force, which is applied through a cord over a pulley, suspending a weight; elevation of the foot of the bed allows the body to act as a counterweight. Synonym: Buck's traction. (05 Mar 2000) |
| paraplegia in extension | Paralysis of the legs, maintained in an extended position by hypertonic extensor muscles. (05 Mar 2000) |
| ridge extension | An intraoral surgical operation for deepening the labial, buccal, and/or lingual sulci; it is performed to increase the intraoral height of the alveolar ridge in order to assist denture retention. (05 Mar 2000) |
| crossed extension reflex | Extension of the contralateral hind limb when the paw of an animal is painfully stimulated or the central cut end of an afferent nerve, e.g., the peroneal, is stimulated; sometimes occurs in humans upon tapping the skin. (05 Mar 2000) |
| primer extension | A technique for determining the 5'-untranslated region of a specific mRNA molecule. Uses an oligonucleotide complementary to the known RNA sequence as a primer for cDNA synthesis via reverse transcriptase. (05 Mar 2000) |
| skeletal extension | Traction pull on a bone structure mediated through pin or wire inserted into the bone to reduce a fracture of long bones. Synonym: skeletal extension. (05 Mar 2000) |
| nail extension | An obsolete method of extension, by a weight on a nail or pin in the distal fragment of a fracture. (05 Mar 2000) |
| extension | 1. <orthopaedics> The movement by which the two elements of any jointed part are drawn away from each other. 2. <anatomy> A movement which brings the members of a limb into or toward a straight relation. Origin: L. Extensio (18 Nov 1997) |
| extension bridge | A fixed partial bridge denture in which the pontic is retained only on one side by an abutment tooth. Synonym: extension bridge. (05 Mar 2000) |
| extension form | The extension of the cavity preparation outline form to include areas of incipient carious lesions; this extension provides a dental restoration with margins that are self-cleansing or easily cleaned. (05 Mar 2000) |