boronia Syllabification: (bo·ro·ni·a)Pronunciation: /bəˈrōnēə/Definition of boronia noun a sweet-scented Australian shrub cultivated for its perfume and for use as a cut flower. Genus Boronia, family Rutaceae Origin:modern Latin, named after Francesco Borone (1769–94), Italian botanistboronia in other Oxford dictionaries Definition of boronia in the British & World English dictionary