| FA | false aneurysm; Families Anonymous; Fanconi anemia; far advanced; fatty acid; febrile antigen; femor... |
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| FLASH | fast low angle shot; fluorescence in situ hybridization |
| FMA | Frankfort mandibular plane angle |
| GPOA | primary open angle glaucoma |
| IMPA | incisal mandibular plane angle |
| pubic angle | The angle formed between the inferior rami of the pubic bones. In the female, the angle approximates that angle between the widely extended thumb and index finger (90 |
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| Serres' angle | The angle between the pterygoid processes and the base of the skull. Synonym: Serres' angle. (05 Mar 2000) |
| hypsiloid angle | In craniometry, the angle at the inion formed by lines drawn from the hormion and the lambda. Synonym: hypsiloid angle. (05 Mar 2000) |
| S-N-A angle | In cephalometrics, an angle measuring the anteroposterior relationship of the maxillary basal arch on the anterior cranial base; it shows the degree of maxillary prognathism. See: subspinale. Origin: sella-nasion-subspinale (or point A) (05 Mar 2000) |
| S-N-B angle | An angle showing the anterior limit of the mandibular basal arch in relation to the anterior cranial base. See: supramentale. Origin: sella-nasion-supramentale (or point B) (05 Mar 2000) |
| spaces of iridocorneal angle | Irregularly shaped endothelium-lined spaces within the trabecular reticulum, through which the aqueous filters to reach the sinus venosus sclerae. Synonym: spatia anguli iridocornealis, ciliary canals, Fontana's spaces. (05 Mar 2000) |
| sphenoidal angle | Angle formed by the intersection at the top of the sella turcica (dorsum sellae), of lines coming from the nasal point and from the tip of the rostrum of the sphenoid. Synonym: sphenoidal angle of parietal bone. (05 Mar 2000) |
| sphenoidal angle of parietal bone | The anterior inferior angle of the parietal bone. Synonym: angulus sphenoidalis ossis parietalis, sphenoid angle, sphenoidal angle, Welcker's angle. (05 Mar 2000) |
| narrow-angle glaucoma | angle-closure glaucoma |
| neck-shaft angle | <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 |
| sternal angle | The angle between the manubrium and the body of the sternum at the manubriosternal junction. Marks the level of the second costal cartilage (rib) for counting ribs or intercostal spaces. Denotes level of aortic arch, bifurcation of trachea, and T4/T5 intervertebral disc. Synonym: angulus sterni, Louis' angle, Ludwig's angle, manubriosternal junction. (05 Mar 2000) |
| sternoclavicular angle | The angle formed by the junction of the clavicle with the sternum. (05 Mar 2000) |
| subpubic angle | The angle formed between the inferior rami of the pubic bones. In the female, the angle approximates that angle between the widely extended thumb and index finger (90 |
| substernal angle | The angle between the lower borders of the costal cartilages of the two sides as they approach the sternum. Synonym: angulus infrasternalis, substernal angle. (05 Mar 2000) |
| Daubenton's angle | An angle formed by the junction, at the opisthion, of lines coming from the basion and from the projection in the median plane of the lower border of the orbits. See: Daubenton's line, Daubenton's plane. Synonym: angulus occipitalis ossis parietalis, occipital angle of parietal bone. (05 Mar 2000) |