ngahurutanga
1. (noun) decade, ten years.
I te ngahurutanga tuatoru o te rau tau 1800–1899, ka tupu tētahi pakanga i waenga i a Ngāi Tahu tonu, nō te mea i whakamaniorotia a Tama-i-hara-nui (TTR 1990:146). / In the third decade of the nineteenth century a war developed among Ngāi Tahu because Tama-i-hara-nui was insulted.