What is the term for cooking meats like pork or duck in order to melt some of fat out them?

The term for cooking meats like pork or duck in order to melt some of the fat out of them is rendering.

Rendering refers to the process of heating fat, often from animal sources, to melt and separate the solid fat from the liquid. This process is used to obtain rendered fat, also known as lard or schmaltz, which can then be used for cooking or other purposes.

While rendering is often associated with obtaining fat, it also has the effect of crisping up the meat. The process of melting the fat out of the meat results in a more flavorful and crispy final product.