amelanchier Syllabification: (am·e·lan·chi·er)Pronunciation: /ˌaməˈlaNGkēər/Definition of amelanchier noun a tree or shrub of a genus that includes the juneberries. Genus Amelanchier, family Rosaceae Origin:from French dialect amelancier 'medlar'amelanchier in other Oxford dictionaries Definition of amelanchier in the British & World English dictionary