ASME Y14.100 : Engineering Drawing Practices
The design activity currently responsible for the design of an item. This may be the original design activity or a design activity to which the design responsibility has been transferred.
See Also:
Design Activity, Item, Original Design Activity
Alternate Definitions:

MIL-STD-31000B - The design activity currently responsible for the design of an item. This may be the original design activity or a design activity to which the design responsibility has been transferred.