| dicksonia | (n) tree ferns of temperate Australasia having bipinnatifid or tripinnatifid fronds and usually marginal sori; in some classification systems placed in family Cyatheaceae, Syn. genus Dicksonia |
| dicksoniaceae | (n) tree ferns: genera Dicksonia, Cibotium, Culcita, and Thyrsopteris elegans, Syn. family Dicksoniaceae |
| soft tree fern | (n) of Australia and Tasmania; often cultivated; hardy in cool climates, Syn. Dicksonia antarctica |
| Dicksonia | prop. n. A genus of tree ferns of temperate Australasia having bipinnatifid or tripinnatifid fronds and usually marginal sori; in some classification systems it is placed in the family |
| Dicksoniaceae | prop. n. |