Dimension

Definition:

One of two types of data that makes up reports in Google Analytics. A dimension is an attribute or characteristic of your users and their interactions with your website. Dimensions are typically presented as a row of information in reports. Examples of dimensions include page location, which provides the full URLs of the page people view on your website, and default channel grouping, which includes top-level information about how people found your website. You’ll find the dimension in the first column inside the standard Google Analytics reports. See also metric.