فَأَما الْقُوَّة الغاذية فَهِيَ الَّتِي تحيل الْغذَاء إِلَى مشابهة المغتذي ليخلف بدل مَا يتَحَلَّل. وَأما النامية فَهِيَ الزائلة فِي أقطار الْجِسْم على التناسب الطبيعي ليبلغ تَمام النشء بِمَا يدْخل فِيهِ من الْغذَاء
The nutritive faculty is that whereby the aliments are transformed into the likeness of the thing nourished, thereby replacing the loss incidental to the process of life. The augmentative faculty is that whereby the increase in size of the body in all directions in just proportion is secured. This is brought about by means of the substances derived from the aliments