ADIANTUM Meaning of ADIANTUM in English n. 1 any fern of the genus Adiantum, e.g. maidenhair. 2 (in general use) a spleenwort. [ L f. Gk adianton maidenhair (as A-(1), diantos wettable) ] Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012