| extrogastrulation | Evagination of the primitive gut material during gastrulation instead of the normal invagination, as the result of some natural or experimental manipulation of the developing embryo or its environment. (05 Mar 2000) |
|---|---|
| extrorse | <plant biology> Of anthers, opening away from the centre of the flower. Compare: introrse. (09 Oct 1997) |
| extrospection | Constant examination of the skin because of fear of parasites or dirt. Origin: ex-+ L. Specto, pp. -atus, to look at, inspect (05 Mar 2000) |
| extroversion | 1. A turning outward. 2. A trait involving social intercourse, as practiced by an extrovert. Compare: introversion. Synonym: extraversion. Origin: incorrectly formed fr. L. Extra, outside, + verto, pp. Versus, to turn (05 Mar 2000) |
| extrovert | 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) |