toka kāhuarau
1. (noun) metamorphic rock.
Ko te toka kāhuarau: Ko te momo toka ka hua mai ina huri te hanga me te āhua o tētahi atu o ngā toka mā te pā mai o te wera me te pēhanga i roto i takanga o te wā roa (RP 2009:407). / Metamorphic rock: The type of rock that results when transformed into another type of rock through the application of heat and pressure over a long period of time.