n.
Pronunciation: ' de- ˌ k ā d, de- ' k ā d; esp sense 1b ' de-k ə d
Function: noun
Etymology: Middle English, from Middle French décade, from Late Latin decad-, decas, from Greek dekad-, dekas, from deka
Date: 15th century
1 : a group or set of 10: as a : a period of 10 years b : a division of the rosary that consists primarily of 10 Hail Marys
2 : a ratio of 10 to 1 : ORDER OF MAGNITUDE
– de · cad · al \ ' de-k ə -d ə l \ adjective