coeval
UK: /kəʊˈiːv(ə)l/ | US: /koʊˈiːvəl/
adj. existing or occurring in the same era; of the same age or duration
n. a person or thing living or existing at the same time as another
The word "coeval" originates from Late Latin coaevus, combining co- (meaning "together") and aevum (meaning "age" or "era"). The root ev derives from Latin aevum, reflecting the concept of time or lifespan. The suffix -al converts it into an adjective. The term entered English in the early 17th century, retaining its core meaning of simultaneity in time. The morphemes logically reconstruct the idea of "sharing the same age."
The two artists were coeval, both rising to fame in the 1920s.
Dinosaurs and early mammals were not coeval; dinosaurs dominated first.
The manuscript and the artifact are coeval, dating back to the 12th century.
Their coeval research projects led to parallel discoveries.
As coeval witnesses to history, their accounts corroborate each other.