Nutriment is a noun that refers to something that provides substance.
The Latin word nutrire (new TREE ray) means ‘to nourish.’ It has given birth to such words as nutritious, nutrient, nutritionist and our word of the day. Nutriment may refer to specific foods or it may refer more broadly to nutritious substance. For an example of the latter: Pizza may taste good, but it doesn't provide much in the way of nutriment. I usually try to eat only foods that have a great deal of substance.