ABCDEFGHIJKLMNOPQRSTUVWXYZ Definition of Decade more ... A period of 10 years. The years 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018 and 2019 are together one decade. Here is a VW Camper Van from the 1960s (the decade 1960 to 1969): Introduction to Days Weeks Months and Years
