Definition of decade
a group or set of 10: such as; a period of 10 years; a division of the rosary that consists primarily of 10 Hail Marys… See the full definition
Middle English, from Middle French décade, from Late Latin decad-, decas, from Greek dekad-, dekas, from deka — see deca-
15th century, in the meaning defined at sense 1 “Decade.”
Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/decade. Nglish: Translation of decade for Spanish Speakers Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free! See Definitions and Examples » Get Word of the Day daily email!