supersede UK /ˌsuːpəˈsiːd/US /ˌsupɚˈsiːd/verb 2noun 1forms 3 verb2 •To take the place of.Those older products have been superseded by our new range. •To displace in favor of itself.Modern US culture has superseded the native forms. noun1 •(Internet) An updated newsgroup post that supersedes an earlier version.Rogue cancels and supersedes are being issued on a large scale against posters. formssuperseded · superseding · supersedes