| nasion | <anatomy> The middle point of the nasofrontal suture. Origin: Nl, fr. L. Nasus nose. Source: Websters Dictionary (01 Mar 1998) |
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| nasion soft tissue | The outer point of intersection between the nasion-sella line and the soft tissue profile. (05 Mar 2000) |
| 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) |
| Bolton-nasion line | A roentgenographic cephalometric plane extending from the Bolton point to nasion. Synonym: Bolton-Broadbent plane, Bolton-nasion line, Bolton-nasion plane. (05 Mar 2000) |
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| Bolton-nasion plane | A roentgenographic cephalometric plane extending from the Bolton point to nasion. Synonym: Bolton-Broadbent plane, Bolton-nasion line, Bolton-nasion plane. (05 Mar 2000) |