### Dimensions
Dimensions are the attributes by which you can slice and group your metrics data. Think of them as the "categories" or "labels" for your data.
**Available Dimensions:**
See [dimensions](https://documentation.mailgun.com/docs/mailgun/user-manual/reporting/dimensions) for a complete list of available dimensions.
**Example:** If you query with dimensions `["time", "domain"]`, your results will be grouped by time period for each sending domain.