ASME Y14.41 : Digital Product Definition Data Practices
Denotes the totality of data elements required to completely define a product. Product definition data includes geometry, topology, relationships, tolerances, attributes, and features necessary to completely define a component part or an assembly of parts for the purpose of design, analysis, manufacture, test, and inspection.
See Also:
Product Definition, Product Definition Data Set, Product, Technical Data Package, Data Package
Alternate Definitions:

ISO 16792 - 9The data objects and associated elements required to completely define a product. In normal usage, PDD refers to the authoritative design engineering design definition, but it can include data associated with production, operations, maintenance, and disposal. (Source: Adapted from ISO 16792, Technical product documentation -- Digital product definition data practices)