| static friction | The force that must be overcome to initiate the motion of one body relative to another because they have been resting in contact. Compare: dynamic friction. Synonym: static friction. (05 Mar 2000) |
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| static gangrene | Moist gangrene due to obstruction in the return circulation. Synonym: venous gangrene. (05 Mar 2000) |
| static hysteresis | The difference in the value reached by a dependent variable at a particular constant value of the independent variable, depending on whether the latter value had been approached from above or below; e.g., in measuring the pressure volume relations of the lungs, if one completely expires and then inspires to a particular volume and holds it constant, the transpulmonary pressure required to maintain that lung volume is greater than if one had completely inspired and then expired to the same volume and held it constant. (05 Mar 2000) |
| static infantilism | A condition observed in young children resembling spastic spinal paralysis; it is marked by hypotonia of the muscles of the trunk and hypertonia of the muscles of the extremities. (05 Mar 2000) |
| static perimetry | Determination of the visual field by using test objects at fixed positions and gradually increasing luminance to the threshold of visibility. (05 Mar 2000) |
| static reflexes | Responses that control the position of the trunk and extremities. See: righting reflexes. Synonym: static reflexes. (05 Mar 2000) |
| static refraction | Refraction without accommodation. (05 Mar 2000) |
| static relations | Relationship between two parts that are not in motion. (05 Mar 2000) |
| static scoliosis | Lateral curvature of the spine due to inequality in length of the legs. (05 Mar 2000) |
| static sense | The sense that makes possible a normal physiologic posture. Synonym: static sense. (05 Mar 2000) |
| static system | That part of the neuromuscular system whereby the animal organism is maintained in posture and equilibrium, and counteracts the forces of gravity and atmospheric pressure; distinguished from the kinetic system. (05 Mar 2000) |
| static tremor | Tremor present when the limbs or trunk are kept in certain positions and when they are moved actively, usually due to near-synchronous rhythmic bursts in opposing muscle groups. Synonym: static tremor. (05 Mar 2000) |
| air-conditioner lung | An extrinsic allergic alveolitis caused by forced air contaminated by thermophilic actinomycetes and other organisms. (05 Mar 2000) |
| airless lung | <radiology> Tumour, foreign body, mucous plug (12 Dec 1998) |
| anterior border of lung | The thin anteromedial or sternal edge of the lung which overlaps the pericardial sac anteriorly and forms the boundary between the mediastinal and costal surfaces. Synonym: margo anterior pulmonis. (05 Mar 2000) |