decade decade /ˈdɛkeɪd/

noun

1. () A period of 10 years  ( decennary , decennium , decade )
   a period of 10 years
    The fashion trends of the past decade are making a comeback.
   The fashion trends of the past decade are making a comeback.
   
   
2. The cardinal number that is the sum of nine and one; the base of the decimal system  ( decade , tenner , X , 10 , ten )
   the cardinal number that is the sum of nine and one; the base of the decimal system
    There are ten fingers on your hands
   There are ten fingers on your hands