era-defining

era-defining (comparative more era-defining, superlative most era-defining)

1. epoch-making
   • 2013 December 16, Bill Saporito, “Ford Is Back in the Saddle with New Mustang”, in Time, retrieved 16 June 2014:

     Calling Ford's muscle car an iconic, era-defining product on the order of Sony's Walkman or Apple's iPhone isn't a stretch.

   • 2022 January 11, Oli Coleman, “Legendary hip-hop producer Pete Rock set to sue Nas over ‘Illmatic’ royalties”, in Page Six, retrieved 12 January 2022:

     Groundbreaking hip-hop producer Pete Rock says that Nas hasn’t paid him a cent in royalties for his work on the rapper’s era-defining double-platinum album “Illmatic”.

• fine-grained, finegrained