The scientific term for an organism that makes its food from inorganic materials is autotroph.

Here's why:

* Auto means "self"

* Troph means "nourishment"

So, an autotroph is an organism that can "self-nourish", meaning it doesn't need to consume other organisms for food. Instead, it uses inorganic materials like sunlight, carbon dioxide, and water to produce its own food through processes like photosynthesis.