Diadelphous is a 11 letter English word. It's valid Words with friends word worth 20 points.
You can make 1005 anagrams from letters in diadelphous (addehilopsu).
First recorded in 1800-10; di-1 + -adelphous
diadelphous, dī-a-del′fus, adj. grouped together in two sets—of the stamens of plants.
Filaments monadelphous below in a tube which is adherent to the corolla, diadelphous at the summit.
diadelphous (stamens), united by their filaments in two sets, 99.