extrorse
/ekˈstrɔːs/adjective
1- Botany & Zoology turned outwards【植, 动】外向的; 向边缘的。 INTRORSE的反义词。
1.1
- (of anthers) releasing their pollen on the outside of the flower（花药）外向的。
词源
mid 19th cent.: from late Latin extrorsus 'outwards' (adverb).