waeine aro whānui
1. (noun) standart unit of measurement (maths).
Ko te take matua mō te waeine aro whānui, kia ōrite te inenga o tēnā, o tēnā i te mahi tauhokohoko, puta noa i te ao (TRP 2010:312). / The main reason for a standard unit of measurement is so that each measurement in commerce is the same throughout the world.