Golden record
The single, most complete and trusted version of a record, built by combining its duplicates.
When a person or a company exists several times in a CRM, the golden record is the one you keep: the record with the right owner, the most activity and the best values, completed with what the other copies knew.
Choosing it well matters because merges are often final. In HubSpot, the primary record's values win and a merge cannot be undone.