tāpiritanga
1. (noun) appendix, addition, attachment.
Ka pahure ngā rau tau ka puāwai he waka kē i te tāpiritanga o te ama (te Ara 2013). / Over centuries, different vessels evolved with the addition of the outrigger.
He maha ngā rautaki hei whakaoti tāpiritanga (TRP 2010:261). / There are many strategies to complete addition.