| nasion soft tissue | The outer point of intersection between the nasion-sella line and the soft tissue profile. (05 Mar 2000) |
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| nasion-pogonion measurement | A measurement of the bony profile of the face. Synonym: nasion-pogonion measurement. (05 Mar 2000) |
| nasion-postcondylar plane | A plane passing through the nasion anteriorly and to a point immediately behind each condylar process of the mandible, posteriorly. (05 Mar 2000) |
| Nasmyth | Alexander, London dentist, +1847. See: Nasmyth's cuticle, Nasmyth's membrane. (05 Mar 2000) |
| Nasmyth's cuticle | The primary enamel cuticle, consisting of two extremely thin layers (the inner one clear and structureless, the outer one cellular), covering the entire crown of newly erupted teeth and subsequently abraded by mastication; it is evident microscopically as an amorphous material between the attachment epithelium and the tooth. Synonym: cuticula dentis, adamantine membrane, dental cuticle, membrana adamantina, Nasmyth's cuticle, Nasmyth's membrane, skin of teeth. (05 Mar 2000) |
| Nasmyth's membrane | The primary enamel cuticle, consisting of two extremely thin layers (the inner one clear and structureless, the outer one cellular), covering the entire crown of newly erupted teeth and subsequently abraded by mastication; it is evident microscopically as an amorphous material between the attachment epithelium and the tooth. Synonym: cuticula dentis, adamantine membrane, dental cuticle, membrana adamantina, Nasmyth's cuticle, Nasmyth's membrane, skin of teeth. (05 Mar 2000) |
| naso- | <anatomy, prefix> A combining form denoting pertaining to, or connected with, the nose; as, nasofrontal. Origin: L. Nasus = nose. (29 Oct 1998) |
| naso-occipital arc | The arc in the midline from the root of the nose to the inferior limit of the external occipital protuberance. (05 Mar 2000) |
| naso-oral | Relating to the nose and mouth. (05 Mar 2000) |
| nasoalveolar cyst | A soft tissue cyst located near the attachment of the ala over the maxilla; probably derived from the lower anterior part of the nasolacrimal duct. Synonym: Klestadt's cyst, nasolabial cyst. (05 Mar 2000) |
| nasoantral | Relating to the nose and the maxillary sinus. (05 Mar 2000) |
| nasobasilar line | A line connecting the basion and the nasion. Synonym: nasobasilar line. (05 Mar 2000) |
| nasobregmatic arc | A line running through the midline of the forehead from the nasion to the bregma. (05 Mar 2000) |
| nasobuccal | <anatomy> Connected with both the nose and the mouth; as, the nasobuccal groove in the skate. Origin: Naso + buccal. Source: Websters Dictionary (01 Mar 1998) |
| nasociliary | Relating to nose and eyelids. See: nasociliary nerve. (05 Mar 2000) |