| MRR | marrow release rate; maximum relation rate |
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| OR | a logical binary relation that is true if any argument is true, and false otherwise; [o]estrogen rec... |
| PPR | physician-patient relation; physician payment reform; posterior primary ramus; Price precipitation r... |
| dispersion relation | <radiobiology> For a given wave, the dispersion relation relates the temporal frequency of a wave (w, or omega) to its wavenumber k and other physical quantities characteristic of the system. Dispersion relations can be quite simple (for example, w = k c for light, c being the speed of light), and they can also be quite complex, with interesting mathematical structure. The dispersion relation and its mathematical structure provide important information about the wave, including the phase and group velocities. Note that the meaning of dispersion relation is different in plasma physics than in other fields. (09 Oct 1997) |
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| intermaxillary relation | Any one of the many relation's of the mandible to the maxillae, e.g., centric jaw relation, eccentric relation. Synonym: intermaxillary relation. (05 Mar 2000) |
| occluding centric relation record | A registration of centric relation made at the established occlusal vertical dimension. (05 Mar 2000) |
| occluding relation | The jaw relation at which the opposing teeth occlude. (05 Mar 2000) |
| eccentric relation | Any relation of the mandible to the maxillae other than centric relation. Synonym: eccentric position. (05 Mar 2000) |
| kern-plasma relation theory | A theory enunciated by Hertwig (1903) that a definite relation as to size normally exists in every cell between the mass of nuclear material and that of the protoplasm. Origin: Ger. Kern, kernel, nucleus (05 Mar 2000) |
| angle of jaw | <anatomy> The angle formed by the lower margin of the body and the posterior margin of the ramus of the mandible. Synonym: angulus mandibulae, angle of jaw. (05 Mar 2000) |
| parrot jaw | A condition caused by protrusion of incisor teeth. (05 Mar 2000) |
| crackling jaw | Chronic subluxation with clicking on motion. (05 Mar 2000) |
| Hapsburg jaw | Prognathism and pouting lower lip, characteristic of the Hispano-Austrian imperial dynasty. (05 Mar 2000) |
| progonoma of jaw | A benign neoplasm of neuroectodermal origin that most often involves the anterior maxilla of infants in the first year of life. It presents clinically as a rapidly growing blue-black lesion producing a destructive radiolucency; histologically, it is characterised by small round undifferentiated tumour cells interspersed with larger polyhedral melanin-producing cells arranged in an alveolar configuration. Synonym: melanoameloblastoma, pigmented ameloblastoma, pigmented epulis, progonoma of jaw, retinal anlage tumour. (05 Mar 2000) |
| inversed jaw-winking syndrome | <syndrome> When there are supranuclear lesions of the trigeminal nerve, touching the cornea may produce a brisk movement of the mandible to the opposite side. (05 Mar 2000) |
| jaw | 1. <anatomy> One of the bones, usually bearing teeth, which form the framework of the mouth. Hence, also, the bone itself with the teeth and covering. In the plural, the mouth. 2. Anything resembling the jaw of an animal in form or action; especially, pl, the mouth or way of entrance; as, the jaws of a pass; the jaws of darkness; the jaws of death. 3. <machinery> A notch or opening. A notched or forked part, adapted for holding an object in place; as, the jaw of a railway-car pedestal. See Axle guard. One of a pair of opposing parts which are movable towards or from each other, for grasping or crushing anything between them, as, the jaws of a vise, or the jaws of a stone-crushing machine. 4. The inner end of a boom or gaff, hollowed in a half circle so as to move freely on a mast. 5. Impudent or abusive talk. Jaw bit, a bar across the jaws of a pedestal underneath an axle box. Jaw breaker, a word difficult to pronounce. Jaw rope, a rope which holds the jaws of a gaff to the mast. Jaw tooth, a molar or grinder; a back tooth. Origin: A modification of chaw, formed under the influence of F. Joue the cheek. See Chaw, Chew. Source: Websters Dictionary (01 Mar 1998) |
| jaw abnormalities | Congenital absence of or defects in structures of the jaw. (12 Dec 1998) |
| jaw bone | The jaw bone. (27 Sep 1997) |