bartsiaPronunciation: /ˈbɑːtsɪə/Definition of bartsia noun a herbaceous plant of the figwort family, some kinds being partly parasitic on the roots of other plants, especially grasses. Bartsia and related genera, family Scrophulariaceae: several species Origin:modern Latin, named after Johann Bartsch (1709–38), Prussian botanistbartsia in other Oxford dictionaries Definition of bartsia in the US English dictionary