| angle of inclination | <orthopaedics> The angle formed by the meeting of a line drawn through the shaft of the femur with one passing through the long axis of the femoral neck; normally it is about 127 |
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| angle of iris | The acute angle between the iris and the cornea at the periphery of the anterior chamber of the eye. Synonym: angulus iridocornealis, angle of iris, angulus iridis, filtration angle. (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) |
| angle of mandible | <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) |
| angle of mouth | <anatomy> The lateral limit of the oral fissure. See: labial commissure. Synonym: angulus oris. (05 Mar 2000) |
| angle of polarization | <optics> The angle of incidence at which the reflected light is all polarised. (05 Mar 2000) |
| angle of reflection | <optics> The angle that a ray reflected from a surface makes with a line drawn perpendicular to this surface. It is equal to the angle of incidence. (05 Mar 2000) |
| angle of refraction | <optics> The angle that a ray leaving a refracting medium makes with a line drawn perpendicular to the surface of this medium. (05 Mar 2000) |
| angle of repose | The maximum angle of slope (measured from horizontal plane) at which loose, cohesionless material will come to rest on a pile of similar material. (09 Oct 1997) |
| angle of torsion | The amount of rotation of a long bone along its axis or between two axes, measured in degrees. (05 Mar 2000) |
| Angle's classification of malocclusion | A classification of different types of malocclusion, based on the mesiodistal relationship of the permanent molars upon their eruption and locking, and comprised of three classes; Class I: normal relationship of the jaws, wherein the mesiobuccal cusp of the maxillary first molar occludes in the buccal groove of the mandibular first permanent molar; Class II: distal relationship of the mandible, wherein the distobuccal cusp of the maxillary first permanent molar occludes in the buccal groove of the mandibular first molar, and further classified as Division 1, labioversion of maxillary incisor teeth, and Division 2, linguoversion of maxillary central incisors, both of which may be unilateral conditions; Class III: mesial relationship of the mandible, wherein the mesiobuccal cusp of the maxillary first molar occludes in the embrasure between the mandibular first and second permanent molars, further classified as a unilateral condition. (05 Mar 2000) |
| Angle, Edward | <person> U.S. Orthodontist, 1855-1930. See: Angle's classification of malocclusion. (05 Mar 2000) |
| angler | 1. One who angles. 2. <zoology> A fish (Lophius piscatorius), of Europe and America, having a large, broad, and depressed head, with the mouth very large. Peculiar appendages on the head are said to be used to entice fishes within reach. Synonym: fishing frog, frogfish, toadfish, goosefish, allmouth, monkfish, etc. Source: Websters Dictionary (01 Mar 1998) |
| angles | <ethnology> An ancient Low German tribe, that settled in Britain, which came to be called Engla-land (Angleland or England). The Angles probably came from the district of Angeln (now within the limits of Schleswig), and the country now Lower Hanover, etc. Origin: L. Angli. See Anglican. Source: Websters Dictionary (01 Mar 1998) |
| anglesite | <chemical> A native sulphate of lead. It occurs in white or yellowish transparent, prismatic crystals. Origin: From the Isle of Anglesea. Source: Websters Dictionary (01 Mar 1998) |
| Broca's angle | More specifically see: Broca's basilar angle, Broca's facial angle, occipital angle of parietal bone. (05 Mar 2000) |
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| Broca's basilar angle | The angle formed at the basion of lines drawn from the nasion and the alveolar point. Synonym: Broca's angles. (05 Mar 2000) |
| Broca's facial angle | The angle formed by the intersection at the biauricular axis of lines drawn from the supraorbital point and the alveolar point. Synonym: Broca's angles. (05 Mar 2000) |
| bucco-occlusal angle | The line of junction of the buccal and occlusal surfaces of a tooth. (05 Mar 2000) |
| cardiodiaphragmatic angle | The angle between the heart and the diaphragm at either lateral end of the cardiac projection on imaging (usually the chest X-ray film). The right cardiophrenic angle is normally indistinguishable from the cardiohepatic angle radiographically. Synonym: cardiodiaphragmatic angle, phrenopericardial angle. (05 Mar 2000) |
| cardiohepatic angle | The angle formed by the upper border of the liver and the right border of the heart, especially as defined by percussion. Synonym: cardiohepatic triangle. (05 Mar 2000) |
| cardiophrenic angle | The angle between the heart and the diaphragm at either lateral end of the cardiac projection on imaging (usually the chest X-ray film). The right cardiophrenic angle is normally indistinguishable from the cardiohepatic angle radiographically. Synonym: cardiodiaphragmatic angle, phrenopericardial angle. (05 Mar 2000) |
| gamma angle | <ophthalmology> The angle formed between a line joining the fixation point to the centre of the eye and the optic axis. (05 Mar 2000) |
| malocclusion, angle class I | Malocclusion in which the mandible and maxilla are anteroposteriorly normal as reflected by the relationship of the first permanent molar (i.e., in neutroclusion), but in which individual teeth are abnormally related to each other. (12 Dec 1998) |
| malocclusion, angle class II | Malocclusion in which the mandible is posterior to the maxilla as reflected by the relationship of the first permanent molar (distoclusion). (12 Dec 1998) |
| malocclusion, angle class III | Malocclusion in which the mandible is anterior to the maxilla as reflected by the first relationship of the first permanent molar (mesioclusion). (12 Dec 1998) |
| Ranke's angle | The angle formed by the horizontal plane of the head and a line passing from the centre of the margin of the alveolar arch of the maxilla, below the nasal spine to the centre of the frontonasal suture. Origin: J. Ranke (05 Mar 2000) |
| venous angle | The junction of the internal jugular and subclavian veins, toward which converge the external and the anterior jugular and the vertebral veins, the thoracic duct in the left angle and the right lymphatic duct in the right angle. Synonym: Pirogoff's angle. In neuroradiology, the angle of union of the superior thalamostriate vein (vena terminalis) with the internal cerebral vein, usually closely behind the interventricular foramen of Monro. (05 Mar 2000) |
| parietal angle | An angle formed by the meeting of the prolongation of two lines tangential to the most prominent part of the zygomatic arch and to the parietofrontal suture on each side; when the lines remain parallel the angle is zero; when they diverge it is negative. Synonym: Quatrefages' angle. (05 Mar 2000) |
| carrying angle | The angle made by the axes of the arm and the forearm, with the elbow in full extension. (05 Mar 2000) |