rea-
1. (particle) A prefix used with numbers to show multiplying, e.g. rearua (double), reatoru (triple). These words can be prefixed by whaka- and take a passive ending (-tia).
Ko te rea- te whakareatanga ki te rua, ki te toru, ki te aha rānei. Hei tauira, ko te 8 te rearua o te 4 (TRP 2010:240). / Rea- is multiplying by two or three or any other number. For example, 8 is double of 4 (TRP 2010:240).
Whakarearuatia te toru, ka ono (TRP 2010:240). / Doubling three gives six.
