turion Syllabification: (tu·ri·on)Pronunciation: /ˈt(y)o͝orēˌän/Definition of turion noun Botany (in some aquatic plants) a wintering bud that becomes detached and remains dormant at the bottom of the water. Origin: early 18th century: from French, from Latin turio(n-) 'a shoot'turion in other Oxford dictionaries Definition of turion in the British & World English dictionary