ˌrēəˈdā(ˌ)lēz noun plural
Usage: capitalized
Etymology: New Latin, from Greek rhoiad-, rhoias corn poppy + New Latin -ales
: an order of dicotyledonous plants including the families Papaveraceae, Fumariaceae, and Cruciferae and having regular or irregular cyclic flowers with hypogynous stamens and a superior compound ovary