An element or a category reported on in a Webtrends report, such as Pages or Content Groups.
A dimension usually does not have a numerical value. Dimensions are described statistically using measures--which do have a numeric value, such as visits, views, or view time. In WebTrends reports, the dimension is the first column (or the first two columns if a primary and a secondary dimension are used). Dimensions are also presented in drill-down format in some Webtrends reports.