Hei whakaahua i ngā momo hanga, i ngā momo hangarau, i ngā momo pūnaha rānei kua kore ōna take, kua ara ake tētahi mea hou hei whakakapi i te wāhi o te mea matangarongaro.
Used to describe products, technology and systems which are no longer useful, where something new has emerged to take the place of the obsolete item.