coeval

/koʊˈivəl/
adjective
  1. Having the same age or date of origin; existing at the same time.
    • The rise of the internet was roughly coeval with the fall of the Soviet Union.
    • These volcanic rocks are coeval with the extinction event that wiped out the dinosaurs.
    • The two manuscripts are coeval, both written in the 12th century.
noun
  1. A person or thing that is the same age or from the same time period as another.
    • As coevals in the same generation, they shared many cultural experiences.
    • Shakespeare and Cervantes were coevals, though they never met.
    • The fossil is a coeval of the earliest known flowering plants.
What does "coeval" mean? | whatsthatwordmean | whatsthatwordmean