[noun] [C], [adjective] [not gradable] [formal or literary] - (a person or thing) of the same age or existing at the same time as another person or thingThe Spanish students had clearly been inspired by the protests of their French coevals, which had forced the government to back down on its education reforms.Their research shows that the abundant reef growth on Gotland was coeval with that in Estonia.
COEVAL
Meaning of COEVAL in English
Cambridge English vocab. Кембриджский английский словарь. 2012