| dynamic psychology | A psychologic approach that concerns itself with the causes of behaviour. (05 Mar 2000) |
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| dynamic psychotherapy | Psychotherapy utilizing freudian principles. See: psychoanalysis. Synonym: dynamic psychotherapy. (05 Mar 2000) |
| dynamic range | <microscopy> In video and other electronic equipment and in photographic emulsions, the ratio of the maximum to minimum signal levels that introduce no more than acceptable levels of signal amplitude distortions. (05 Aug 1998) |
| dynamic refraction | Refraction of the eye during accommodation. (05 Mar 2000) |
| dynamic relations | Relative movements between two objects, e.g., the relationship of the mandible to the maxillae. (05 Mar 2000) |
| dynamic school | A group of theorists founded by Stahl, who professed the belief that all vital action is the result of an internal force independent of anything external to the body. (05 Mar 2000) |
| dynamic splint | A splint utilizing springs or elastic bands that aids in movements initiated by the patient by controlling the plane and range of motion. Synonym: active splint, functional splint. (05 Mar 2000) |
| dynamic viscosity | The internal or molecular frictional resistance of a fluid by Newton's law of viscosity as the ratio of the applied force per unit area to the relative velocity of adjacent fluid layers (produced by the force). (05 Mar 2000) |
| instrascene dynamic range | <microscopy> The greatest ratio of highlight to shadow brightness to within a single scene that a video camera (tube) can handle usefully. Contrast with the usable light range of a camera, which is considerably greater than the instrascene dynamic range. See: illumination, Kohler. (05 Aug 1998) |
| basilar impression | An invagination of the base of the skull into the posterior fossa with compression of the brainstem and cerebellar structures into the foramen magnum. Compare: platybasia. (05 Mar 2000) |
| cardiac impression of liver | A depression on the superior area of the diaphragmatic surface of the liver corresponding to the position of the heart. Synonym: impressio cardiaca hepatis. (05 Mar 2000) |
| cardiac impression of lung | The depression on the medial surface of each lung produced by the presence of the heart. It is more pronounced on the left lung. Synonym: impressio cardiaca pulmonis. (05 Mar 2000) |
| gastric impression | A hollow on the visceral surface of the left lobe of the liver corresponding to the location of the stomach. Synonym: impressio gastrica. (05 Mar 2000) |
| partial denture impression | An impression or negative copy of all or a part of the partially edentulous dental arch or area, made for the purpose of designing or constructing a partial denture. (05 Mar 2000) |
| renal impression | A hollow on the visceral surface of the right lobe of the liver, in which lies the right kidney. Synonym: impressio renalis. (05 Mar 2000) |