extrorse Syllabification: (ex·trorse)Pronunciation: /ˈekˌstrôrs/Definition of extrorse adjective Botany & Zoology turned outward. The opposite of introrse. (of anthers) releasing their pollen on the outside of the flower. Derivatives extrorsely adverb Origin: mid 19th century: from late Latin extrorsus 'outward'(adverb)extrorse in other Oxford dictionaries Definition of extrorse in the British & World English dictionary