1.AdjectiveThat lived or existed at almost the same time (as another/others); nearly contemporary
"The chalcolithic Corded Ware culture of North-Central and Eastern Europe has been found to display archaeological as well as genetic affinities to the penecontemporary Yamnaya horizon of the Pontic–Caspian Steppe."
2.NounThat which is penecontemporary, living or existing at almost the same time (as another/others)