Didonia is a genus of fungi within the Hyaloscyphaceae family. The genus contains 5 species. ...
• (n.) The curve which on a given surface and with a given perimeter contains the greatest area.
Di·do'ni·a noun [ New Latin So called in allusion to the classical story of Dido and the bull's hide.] (Geom.) The curve which on a given surface and with a given perimeter contains the greatest area. Tait.