Here's how to break down the name:

* Di-: Indicates there are two sulfur atoms (S) in the molecule.

* Sulfur: Refers to the element sulfur.

* Di-: Indicates there are two nitrogen atoms (N) in the molecule.

* Nitride: Refers to the nitrogen anion (N³⁻).

The name follows the rules for naming binary covalent compounds, where the less electronegative element is named first, and the more electronegative element is named second with an "-ide" suffix.