There isn't one specific, universally accepted term for non-metal oxides. However, you can use several terms depending on the context and what you want to emphasize:

* Acidic oxides: This is a common term, as most non-metal oxides react with water to form acids.

* Anhydrides: This refers to compounds that lack water molecules but can form acids when combined with water. Many non-metal oxides fall into this category.

* Non-metallic oxides: This is a straightforward and descriptive term.

* Oxides of nonmetals: This emphasizes the type of element involved.

The most appropriate term will depend on the specific situation. If you're discussing their chemical properties, "acidic oxides" is a good choice. If you're simply trying to classify them, "non-metallic oxides" or "oxides of nonmetals" will work.