He kai e ora ai tētahi rauropi. Ko tā te rauropi he kai i te taiora, he huri i te taiora hei pūngao mōna, e tutuki ai āna mahi pērā i te tupu, te whakaputa uri me te nuku. Ko te pūmua, te ngako, te warowaihā me te huaora ngā rōpū taiora matua.
A food substance which provides sustenance for an organism. The organism consumes the nutrient and uses it as a source of energy to carry out its functions, such as growth, reproduction and movement. The main groups of nutrients are proteins, fats, carbohydrates and vitamins.