Every company has a metric dictionary, and in most of them it lives in people's heads, in the SQL behind the dashboards, and in the slide where a number was last explained. This deck covers how to write it down: the eight fields each entry needs, example entries for bookings, recognized revenue, and active customer, source-of-truth rules, and three habits that keep it current. Condensed from the essay by Malek Damiri at https://malekdamiri.com/writing/revops-metric-dictionary/