[TERMINOLOGY] Is there a name for ... ?

[Ole Ersoy]

If a have a DN like this:
cn=Accounts, cn=users, cn=example, ou=com
the cn=Accounts part is called the RDN.

I'm trying to figure out what I call the
right most segment of the DN (ou=com)?

Is it the "Root Context"?  We might call it a "Partition Context", but 
I'm trying to find a standard term...

Thanks,
- Ole