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Software testing terminology

I'm trying to research a term for software testing. Specifically, that applies to the following scenario:

1. You've got software "S", which is in version V
2. S has functionality to "whiz," "bang," and "zoom"
3. You find a bug with S's zooming
4. You apply a patch to address the zoom function
5. S can now zoom
6. S can no longer whiz.

My question: What types of tests are specifically designed to ensure that a patch to a particular module doesn't unexpectedly break other modules? Is this simply a special case of Regression Testing? is there a special term for this?