I. (ˈ)kō|ēvəl adjective
Etymology: Latin coaevus of the same age (from co- + aevum age) + English -al — more at age
: of the same or equal age or antiquity : originating or occurring in and often lasting through the same era or epoch
the theory requires that these coeval stars should be nearly the same in mass and brightness — A.S.Eddington
California, too, has its ranches, many of them of Mexican genesis and coeval with those of Texas — P.A.Rollins
Synonyms: see contemporary
II. noun
( -s )
: one of the same age : contemporary
the American actor seems “younger” than his coevals abroad — H.E.Clurman
he spoke and wrote to children as a coeval — John Buchan