from Wiktionary, Creative Commons Attribution/Share-Alike License.
- adjective grammar Of, pertaining to, or being the use of a term together with a grammatical
- adjective specifically Used with or headed by a grammatical article.
from Wiktionary, Creative Commons Attribution/Share-Alike License
Basically, it appears that compound nouns that start with Oxford University can be arthrous (introduced by the article the, as discussed at length by Arnold Zwicky), but Oxford University itself is anarthrous (not introduced by an article).
Oh, for the simplicity of Koine Greek, where all proper nouns are arthrous ....