| ND | Doctor of Naturopathy; nasal deformity; natural death; Naval Dispensary; neonatal death; neoplastic ... |
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| NSR | nasal septal reconstruction; nonspecific reaction; normal sinus rhythm; no sign of recurrence; not s... |
| NW | naked weight; nasal wash |
| PND | paroxysmal nocturnal dyspnea; partial neck dissection; postnasal drainage; postnasal drip; postnatal... |
| PNM | perinatal mortality; peripheral dysostosis, nasal hypoplasia, and mental retardation [syndrome]; per... |
| nasal glioma | <tumour> Term for a lesion that is probably not a true neoplasm, but an unusual anomaly consisting of glial tissue with reactive astrocytes, ganglionic neurons, and ependymal cells in small nodules at the base of the nose. (05 Mar 2000) |
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| nasal haemorrhage | <clinical sign> Nosebleed, haemorrhage from the nose. (18 Nov 1997) |
| nasal index | Relation of the greatest width of the nasal aperture to the length of a line from the nasion to the lower border of the nasal aperture: (nasal width × 100)/nasal height. (05 Mar 2000) |
| nasal lavage fluid | Fluid obtained by irrigation or washout of the nasal cavity and nasal mucosa. The resulting fluid is used in cytologic and immunologic assays of the nasal mucosa such as with the nasal provocation test in the diagnosis of nasal hypersensitivity. (12 Dec 1998) |
| nasal margin of frontal bone | The border of the frontal bone that articulates with the nasal bones. Synonym: margo nasalis ossis frontalis, nasal margin of frontal bone. (05 Mar 2000) |
| nasal meatus | Any of three passages in the nasal cavity formed by the projection of the conchae: middle nasal meatus, lies below the inferior concha; middle nasal meatus, lies between the middle and inferior conchae; superior nasal meatus, lies between the superior and middle conchae. Synonym: meatus nasi. (05 Mar 2000) |
| nasal mucosa | The mucous membrane lining the nasal cavity. (12 Dec 1998) |
| nasal muscle | <anatomy> Compound muscle consisting of: a transverse part (pars transversa musculi nasalis, musculus compressor naris) arising from the maxilla above the root of the canine tooth on each side and forming an aponeurosis across the bridge of the nose; and an alar part (pars alaris musculi nasalis, musculus dilator naris) arising from the maxilla above the lateral incisor and attaching to the wing of the nose; the alar part dilates the nostril; nerve supply, facial. Synonym: musculus nasalis, nasal muscle. (05 Mar 2000) |
| nasal myiasis | Fly larva invasion of the nasal passages, due most commonly in the U.S. To primary screw-worms, the larvae of Cochliomyia hominivorax, which develop in the nasal or aural cavity. (05 Mar 2000) |
| nasal nerve | <anatomy, nerve> A branch of the ophthalmic nerve in the superior orbital fissure, passing through the orbit, giving rise to the communicating branch to the ciliary ganglion, the long ciliary nerves, the posterior and anterior ethmoidal nerves, and terminating as the infratrochlear and nasal branches, which supply the mucous membrane of the nose, the skin of the tip of the nose, and the conjunctiva. Synonym: nervus nasociliaris, nasal nerve. (05 Mar 2000) |
| nasal notch | The notch in the medial border of the maxilla anteriorly which, with its fellow, forms most of the piriform opening of the nasal cavity. Synonym: incisura nasalis. (05 Mar 2000) |
| nasal obstruction | Any hindrance to the passage of air into and out of the nose. The obstruction may be in the nasal vestibule, fossae, or other areas of the nasal cavity. (12 Dec 1998) |
| nasal part of frontal bone | Nasal portion of the frontal bone which lies between the two orbital parts anteriorly and forms part of the roof of the nasal cavity. Synonym: pars nasalis ossis frontalis. (05 Mar 2000) |
| nasal part of pharynx | <anatomy> The portion of the pharynx extending from the posterior nares to the level of the soft palate. (27 Sep 1997) |
| nasal pharynx | <anatomy> The portion of the pharynx extending from the posterior nares to the level of the soft palate. (27 Sep 1997) |