| extravert | A gregarious person whose chief interests lie outside the self, and who is socially self-confident and involved in the affairs of others. Compare: introvert. Synonym: extravert. (05 Mar 2000) |
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| extravisual | Outside the field of vision, or beyond the visible spectrum. (05 Mar 2000) |
| extravital ultraviolet | Having wavelengths of 2900 to 1850 A |